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find the values of x and y: (a-b)x + (a+b)y = a^{2 }-2ab-b^2 ; (a+b)(x+y)=a^2 + b^2

Answer» find the values of x and y: (a-b)x + (a+b)y = a^{2 }-2ab-b^2 ; (a+b)(x+y)=a^2 + b^2


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