add 8x^2 + 7xy-6y^2,4x^2-3xy+2y^ 2 and -4x^2+xy -y^2 – InterviewSolution

1.	add 8x^2 + 7xy-6y^2,4x^2-3xy+2y^ 2 and -4x^2+xy -y^2
Answer» -2xy+y² is the ANSWER MATE

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