2x^2y^2-5x+7 to get sum -5x^2y^2+7x-9 – InterviewSolution

1.	2x^2y^2-5x+7 to get sum -5x^2y^2+7x-9
Answer» 2 + 25x2 + 4xy − 10yz − 20zx when x= 4, y = 3 and Z ... We shall use the identity (x+y-z)2=x2+y2+z2+2xy-2yz-2zx for EXPANDING the ... (iii) (x7+y3) (x249+y29-xy21)Step-by-step explanation: i hope this helps you

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