1. Expand the following:(a) (7x + 1)2(e) (x - y)2 – (x + y)? – InterviewSolution

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1.	1. Expand the following:(a) (7x + 1)2(e) (x - y)2 – (x + y)?
Answer» <p>a)49x²+14x+1e)(x-y+x+y)(x-y-x-y)=2x.(-2y)=-4xyis the right answer</p>

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