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The number of pairs of reals (x, y) such that x = x^2 + y^2 and y = 2xy is (a) 4 (b) 3 (c) 2 (d) 1

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The number of pairs of reals (x, y) such that x = x2 + y2 and y = 2xy is

(a) 4

(b) 3

(c) 2

(d) 1

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1 Answer

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Best answer

Answer is : (a) 4

We have,

∴ Value of (x, y) are (0, 0) (0, 1)

(1/2, 1/2)(1/2, -1/2).

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