Solve the simultaneous equations x² + y² = 26 x + y = 4

Solve the simultaneous equations
x² + y² = 26
x + y = 4

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y = 4 - x

Substitute to get

x² + (4 -x)² = 26

2x² - 8x - 10 = 0

x² - 4x - 5 = 0

(x + 1)(x - 5) = 0

x = -1 or x = 5

When x = -1, y = 5

When x =5, y = -1

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johnmulu answered the question on March 8, 2017 at 05:30

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