
一元二次方程求解!{急}!
2x^2-xy-3y^2=0x^2-5xy+6y^2=0(x+2)^2+4(x+2)+3=0...
2x^2-xy-3y^2=0
x^2-5xy+6y^2=0
(x+2)^2+4(x+2)+3=0 展开
x^2-5xy+6y^2=0
(x+2)^2+4(x+2)+3=0 展开
1个回答
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1. (2x-3y)(x+y)=0 2x=3y x=-y
2. (x-3y)(x-2y)=0 x=3y x=y
3. (x+2+3)(x+2+1)=0 x1=-5 x2=-3
2. (x-3y)(x-2y)=0 x=3y x=y
3. (x+2+3)(x+2+1)=0 x1=-5 x2=-3
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