Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Browse exam papers

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Simplify the expression below

Answers

sharon kalunda answered the question on August 13, 2019 at 12:38

Answer Attachments

Next: What is the effect of Temperature on Semiconductors?

Previous: Using tables of reciprocals, find the value of M if;

View more Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

The surface area of two cylindrical water tanks are 50m² and 162m² respectively. Given that the volume of water in the second tank is 36450m³,... (Solved)

The surface area of two cylindrical water tanks are 50m² and 162m² respectively. Given that the volume of water in the second tank is 36450m³, find the volume of water in the first tank if it’s half full.

Date posted: August 13, 2019 . Answers (1)
A line passing through points P (4, a) and Q (3, 2) is perpendicular to the line 3y + x + 3 = 0. Find... (Solved)

A line passing through points P (4, a) and Q (3, 2) is perpendicular to the line 3y + x + 3 = 0. Find the value of a and write down equation of line PQ.

Date posted: August 13, 2019 . Answers (1)
Use a calculator or otherwise to evaluate, (Solved)

Use a calculator or otherwise to evaluate,

Date posted: August 13, 2019 . Answers (1)
A matatu left town A at 7.00 a.m and travelled towards a town B at an average speed of 60km/h. A second matatu left town B... (Solved)

A matatu left town A at 7.00 a.m and travelled towards a town B at an average speed of 60km/h.
A second matatu left town B at 8.00 a.m and travelled towards town A at an average 60 km/h. If the distance between the two towns is 400 km, find:
a) The time at which the two matatus met.
b) The distance of the meeting point from town A.

Date posted: August 13, 2019 . Answers (1)
The figure below shows a circle centre O. PQRS is a cyclic quadrilateral and QOS is a straight line. Giving reasons for your answers, find the... (Solved)

The figure below shows a circle centre O. PQRS is a cyclic quadrilateral and QOS is a straight line.

Giving reasons for your answers, find the value of:
a) b) c) d) e) Reflex
Date posted: August 13, 2019 . Answers (1)
A motorist is to follow the route ABCD. B is 250 km from A on a bearing of N75⁰E from A. C is on a... (Solved)

A motorist is to follow the route ABCD. B is 250 km from A on a bearing of N75⁰E from A. C is on a bearing of S75⁰E from A and 275 km from B. D is 300 m on a bearing of S80⁰E from B. Using a scale of 1 cm to represent 50 km;
a) Show the relative position of ABCD.
b) Determine:
i) The distance of A from C
ii) The bearing of B from C
iii) The distance of A from D
iv) The compass bearing of C from D

Date posted: August 13, 2019 . Answers (1)
The figure below shows the net of a regular rectangular based pyramid. The rectangle measures 18 cm by 15 cm. N and K are mid-points... (Solved)

The figure below shows the net of a regular rectangular based pyramid. The rectangle measures 18 cm by 15 cm. N and K are mid-points of AD and BC respectively. AB=18 cm and BC= 15 cm while VK=16 cm. V is the vertex and O is the centre of the rectangle ABCD.

a).Sketch the pyramid and label all the vertices
b) From the diagram in (a) above, calculate to 2 decimal places.
i) Length CV
ii) Length VO
iii) The angle between the plane VCB and the base ABCD.
iv) The angle between the plane BVC and AVD

Date posted: August 13, 2019 . Answers (1)
a) Use the trapezium rule with 5 strips to estimate the area enclosed by the curve, the x-axisand the lines x=-2 and x=3 of the... (Solved)

a) Use the trapezium rule with 5 strips to estimate the area enclosed by the curve, the x-axis and the lines x=-2 and x=3 of the curve y=x²+x+9.
b) Find the exact area bounded by the curve, the x-axis and the line x=-2 and x=3.
c) Find the percentage error in your workings.

Date posted: August 13, 2019 . Answers (1)
A self help group of 10 young men invested Shs 72,000 in two companies A and B. A pays a dividend of 22.5% while B... (Solved)

A self help group of 10 young men invested Shs 72,000 in two companies A and B. A pays a dividend of 22.5% while B pays a dividend of 21%. If from their total investment they obtained a return of 21.5%, how much money did they invest in each company?

Date posted: August 13, 2019 . Answers (1)
A triangle PQR has a height of x cm and a base of(x+3) cm. if its area is 5 cm², calculate the height of its... (Solved)

A triangle PQR has a height of x cm and a base of(x+3) cm. if its area is 5 cm², calculate the height of its base.

Date posted: August 13, 2019 . Answers (1)
Solve the following simultaneous equations using matrix Method. (Solved)

Solve the following simultaneous equations using matrix Method.
4a+3b=120
2a+5b=130

Date posted: August 13, 2019 . Answers (1)
The total marks scored in a test by 6 pupils was 420. If the mean mark for the first 5 pupils was 68. (Solved)

The total marks scored in a test by 6 pupils was 420. If the mean mark for the first 5 pupils was 68, find the marks scored by the sixth pupil.

Date posted: August 13, 2019 . Answers (1)
Use the reciprocal tables, square tables and cube tables to evaluate; (Solved)

Use the reciprocal tables, square tables and cube tables to evaluate;

Date posted: August 13, 2019 . Answers (1)
The perimeter of a triangular field is 120 M. Two of the sides are 21m and 40m. calculate the largest angle of the field hence... (Solved)

The perimeter of a triangular field is 120 M. Two of the sides are 21m and 40m. calculate the largest angle of the field hence find the area of the field.

Date posted: August 13, 2019 . Answers (1)
The equation of a circle is given by 2x²+16x+2y²-4y-2=0. Determine the radius and centre of the circle. (Solved)

The equation of a circle is given by 2x²+16x+2y²-4y-2=0. Determine the radius and centre of the circle.

Date posted: August 13, 2019 . Answers (1)
Evaluate the following without using mathematical tables or calculator. (Solved)

Evaluate the following without using mathematical tables or calculator.

Date posted: August 13, 2019 . Answers (1)
Use a calculator to work out (Solved)

Use a calculator to work out

Date posted: August 13, 2019 . Answers (1)
Given that point A(2,4) and B(8, -4) , find the equation of the perpendicular bisector of line AB. (Solved)

Given that point A(2,4) and B(8, -4) , find the equation of the perpendicular bisector of line AB.

Date posted: August 13, 2019 . Answers (1)
Simplify the expression below. (Solved)

Simplify the expression below.

Date posted: August 13, 2019 . Answers (1)
In the figure below, 0 is the centre of the circle. PQ and PR are tangents to the circle at P and R respectively Angle... (Solved)

In the figure below, 0 is the centre of the circle. PQ and PR are tangents to the circle at P and R respectively Angle PQS = 40⁰ and angle PRS 30° RTU is a straight line.

Find with reasons the angles
i) QRS
ii) RTQ
iii) RPQ
iv) Reflex angle QOR
v) TRO given that TR =TQ

Date posted: August 13, 2019 . Answers (1)