Multiply. 1-x +y by 1+x+y.
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0
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answer nahi pata samraheho na nahi pata
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1
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Step-by-step explanation:
(1-x+y)(1+x+y)
=1+x+y-x+x^2-xy+y+xy+y^2
=1+2y+x^2+y^2
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