7,x+y=a-band ax-bya2 + b228. – InterviewSolution

1.

7,x+y=a-band ax-bya2 + b228.

Answer»

x+y=a-bax-by=a^2+b^2Multiply equation 1 with bbx+by=ab-b^2ax-by=a^2+b^2Add equations(a+b)x=a(a+b)x=aNow, y=a-b-a; y=-b

kya ise substitution method se kar sakte ho

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