Question

prove that (x+y) sq=x sq+y sq+2xy
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Answer 1

Answer:

Please refer to the picture.

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Answer 2

Answer:

this is the proof

Step-by-step explanation:

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

          =[(x(x+y)+y(x+y)]

          =(x sq+xy+xy+y sq)

          = x sq+y sq 2xy   ......hence proved