解下列方程: (1)(4x+3)(5-x)=0 (2)(x-1)^2+2x(x-1)=0 (3)2x^2-4x-5=0 5
(4)-3x^2-4x-5=0(5)3x(x-1)=2-2x(6)(x-1)(x+2)=70(7)x(x+6)=7(8)(3-x)^2+x^2=9...
(4)-3x^2-4x-5=0 (5)3x(x-1)=2-2x (6)(x-1)(x+2)=70
(7)x(x+6)=7 (8)(3-x)^2+x^2=9 展开
(7)x(x+6)=7 (8)(3-x)^2+x^2=9 展开
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