Question

factorise x2y - xz2 - ch + z2​

Answer 1

Hey mate,

x²y - xz² - xy + z² = x²y - xy - xz² + z2 = xy. ( x - 1 ) - z2 ( x - 1 ) = ( x - 1 ) ( x - y - z2 )

Hope it helps...

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