数学(初2)

(1)4x^2-4x^3+x^2
=x^2(5-4x)

(2)x^2-16xa+64a^2
=(x-8a)^2

(4)(x-1)(x-3)+1
=x^2-4x+3+1
=(x-2)^2

(ab+a)+(b+1)
=a(b+1)^2

1和3题目打错了把,1应该是
4x^4-4x^3+x^2
3应该是)(x-1)(x-3)+1 否则不像是正常的题目啊

1:x^2(2x-1)^2

2:(x-8a)^2
3:(x-2)^2
4:(a+1)(b+1)
what are you doing? you have writen the same question for 4 times...

因式分解？