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What is the value of 3²(5²-4²)-3²4²-2²

Class: KCPE

Subject: Mathematics

Topic: Fractions

Lesson Summary

What is the value of 3²(5²-4²)-3²4²-2²

A.6
B.3
C.9
D.36



Text Answer


Simplify numerator: 3²(5²−4²)−3² = 9(25-16) – 9
= 9 x 9 – 9 = 81 – 9 = 72

Simplify denominator: 4²−2² = 16 – 4 = 12

Divide numerator by denominator: 7212 =6

The correct answer is A (6).

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