x²-6x+9-y²因式分解怎么做?
问题描述:
x²-6x+9-y²因式分解怎么做?
答
x²-6x+9-y²
=(x-3)²-y²
=(x-3-y)(x-3+y)
x²-6x+9-y²因式分解怎么做?
x²-6x+9-y²
=(x-3)²-y²
=(x-3-y)(x-3+y)