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)2x
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)