分解因式吗?
(1)(x-3)^2-2(x-3)
=(x-3)(x-3-2)
=(x-3)(x-5)
(2)(x^2-1)^2+6(1-x^2)+9
=(x^2-1)^2-6(x^2-1)+9
=[(x^2-1)-3]^2
=(x^2-4)^2
=(x+2)^2(x-2)^2
分解因式吗?
(1)(x-3)^2-2(x-3)
=(x-3)(x-3-2)
=(x-3)(x-5)
(2)(x^2-1)^2+6(1-x^2)+9
=(x^2-1)^2-6(x^2-1)+9
=[(x^2-1)-3]^2
=(x^2-4)^2
=(x+2)^2(x-2)^2