(X+1)平方减2(x+1)化简

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(X+1)平方减2(x+1)化简
(X+1)平方减2(x+1)化简

(X+1)平方减2(x+1)化简
(x+1)²-2(x+1)
=(x+1)(x+1-2)
=(X+1)(x-1)
=x²-1
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(x+1)^2-2(x+1)=(x+1)(x+1-2)=(x+1)(x-1)=x^2-1

(x+1)(x+1-2)
=(x+1)(x-1)
=x²-1

(x+1)(x+1)-2(x+1)=(x-1)(x+1)