分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.将下列各式分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.
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![分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.将下列各式分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.](/uploads/image/z/10759640-32-0.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%3A%EF%BC%881%EF%BC%89x%26%23178%3B-9x+%EF%BC%882%EF%BC%892x%26%23178%3B-12x%2B18+%EF%BC%883%EF%BC%898%EF%BC%88x%26%23178%3B-2y%26%23178%3B%EF%BC%89-x%EF%BC%887x%2By%EF%BC%89%2Bxy.%E5%B0%86%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%3A%EF%BC%881%EF%BC%89x%26%23178%3B-9x+%EF%BC%882%EF%BC%892x%26%23178%3B-12x%2B18+%EF%BC%883%EF%BC%898%EF%BC%88x%26%23178%3B-2y%26%23178%3B%EF%BC%89-x%EF%BC%887x%2By%EF%BC%89%2Bxy.)
分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.将下列各式分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.
分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.
将下列各式分解因式:
(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.
分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.将下列各式分解因式:(1)x²-9x (2)2x²-12x+18 (3)8(x²-2y²)-x(7x+y)+xy.
(1)x²-9x=x(x9)
(2)2x²-12x+18=2(x^2-6x+9)=2(x-3)^2
(3)8(x²-2y²)-x(7x+y)+xy=8x^2-16y^2-7x^2-xy+xy=x^2-16y^2=(x+4y)(x-4y)