If x2-4 y2-4 x y- find x- y

X^2 + 4y^2 4xy = 0 = gt; x^2 2 * x * 2y + (2y)^2 = 0 = gt; (x 2y)^2 = 0 = gt; x = 2y = gt; x/y = 2 ...

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Expansion of (x^2 - y^2)

If x2+4 y2=4 ...

Question

If x²+4y²=4xy,find x:y

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