Question

prove (x - y)2 = x2 - 2xy + y2

Answer 1

Answer:

we know that ,

(x+y)2

=(x+y)(x+y)

=x(x+y)+y(x+y)

=x2+xy+yx+y2

=x2+2xy+y2

Hence, it is proved that (x+y)2=x2+2xy+y2

Answer 2

Answer:

please don't mind the handwritting but the answer is absolutely correct according to geometrical explanation ; as someone explained it algebrically so I didn't...

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