因式分解(1)3x²-5xy+2y²(2)2x²+3xy-5y²
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因式分解(1)3x²-5xy+2y²(2)2x²+3xy-5y²
因式分解(1)3x²-5xy+2y²(2)2x²+3xy-5y²
因式分解(1)3x²-5xy+2y²(2)2x²+3xy-5y²
(1)3x(x-y)-2(x-y)y=(3x-2y)(x-y)
(2)2x(x-y)+5y(x-y)=(2x+5y)(x-y)
(3X-2Y)(X-Y) (2X+5Y)(X-Y) 十字法
(1)3x²-5xy+2y²=(3x-2y)(x-y)
(2)2x²+3xy-5y²=(x-y)(2x+5y)