Question

simplify x^2+x+1-(5-3x+x^2)

Answer 1

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Answer 2

4x-4

Answer 3

on opening the bracket at the end, signs of all the terms inside will change due to the negative sign outside

so it will become

x^2+X+1-5+3x-x^2
this gives
x^2-x^2+x+3x+1-5
=4x-4

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