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Question
Solve for x, y : `[(x^2),(y^2)] + 2[(-2x),(-y)] = [(5),(8)]`
Solution
x2 – 4x = 5
y2 – 2y = 8
y2 – 2y – 8 = 0
(y – 4)(y + 2) = 0
y = 4, – 2
x2 – 4x – 5 = 0
(x – 5)(x + 1) = 0
x = 5, – 1
x = – 1, 5 and y = 4, – 2
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