计算[因式分解]

解：x+1+x(x+1)
=(x+1)*1+x(x+1)
=(1+x)(x+1)
=(x+1)^2
解：(3a-2b)^2-(2a+3b)^2
=(3a-2b+2a+3b)(3a-2b-2a-3b)
=(5a+b)(a-5b)
解：x^2-x+1/4
=x^2-2*(1/2)*x+(1/2)^2
=(x-1/2)^2

1+x+x(1+x) =(1+x)(1+x)=(1+x)²
(3a-2b）^2-(2a+3b)^2
=[(3a-2b)+(2a+3b)][(3a-2b)-(2a+3b)]
=(5a+b)(a-5b)
x^2-x+1/4=(x-1/2)²

回答的人很多啊