(a-b) x+(a+b)y=a2-2ab-b2(a+b)(x+y)=a2+b2

1.	(a-b) x+(a+b)y=a2-2ab-b2(a+b)(x+y)=a2+b2
Answer» Given that (a-b) x + (a + b)y = a2 - 2ab - b2 -------------(1)(a+b) x+ (a+b)y = a2 + b2 -------------(2)\xa0Substracting (2) from (1) we get-2bx = -2ab=2b2 x = a + bSubsitute x in equation (2) we get y = - 2ab / ( a + b).

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