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2 years ago

Number 13. Multiply please.

Mathematics

1 answer:

Dafna11 [192]2 years ago

8 0

$(x-y)^2 \\\\\\= (x-y)(x-y)\\\\= x * x + (x)(-y)+(-y)(x) +(-y)(-y)\\\\ = x^2 -xy-xy + y^2\\\\=x^2-2xy + y^2$

Hope that helps!

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