x三次方+x²y-xy²-y三次方 因式分解(2) ax²-bx²+bx-ax+a-b 因式分解(3)x²+6xy+9y²-16a²+8a-1 因式分解
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![x三次方+x²y-xy²-y三次方 因式分解(2) ax²-bx²+bx-ax+a-b 因式分解(3)x²+6xy+9y²-16a²+8a-1 因式分解](/uploads/image/z/363600-0-0.jpg?t=x%E4%B8%89%E6%AC%A1%E6%96%B9%2Bx%26%23178%3By-xy%26%23178%3B-y%E4%B8%89%E6%AC%A1%E6%96%B9+%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%882%EF%BC%89+ax%26%23178%3B-bx%26%23178%3B%2Bbx-ax%2Ba-b+%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%883%EF%BC%89x%26%23178%3B%2B6xy%2B9y%26%23178%3B-16a%26%23178%3B%2B8a-1+%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
x三次方+x²y-xy²-y三次方 因式分解(2) ax²-bx²+bx-ax+a-b 因式分解(3)x²+6xy+9y²-16a²+8a-1 因式分解
x三次方+x²y-xy²-y三次方 因式分解
(2) ax²-bx²+bx-ax+a-b 因式分解
(3)x²+6xy+9y²-16a²+8a-1 因式分解
x三次方+x²y-xy²-y三次方 因式分解(2) ax²-bx²+bx-ax+a-b 因式分解(3)x²+6xy+9y²-16a²+8a-1 因式分解
x³+x²y-xy²-y³=x²(x+y)-y²(x+y)
=(x+y)(x²-y²)
=(x+y)(x+y)(x-y)
=(x+y)²(x-y)
x3-y3+x2y-xy2=(x-y)(x2+xy+y2)+xy(x-y)=(x-y)(x+y)2 数字都是平方立方