Question

factorise x^2 + y - xy -x

Answer 1

Step-by-step explanation:

ab(x2 + y2) – xy(a2 + b2) = abx2 + aby2 – xya2 - xyb2 =

= abx^2 - xya^2 + aby^2 - xyb^2 = ax(bx - ay) - by(bx - ay) = (ax - by)(bx - ay). <-------------/

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Answer 2

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