一元二次方程过程谢谢
(1) X(2-3X)+(3X-2)=0
(2) 3(X-5)^=X^-25
参考答案:(1) 用提公因式法:
(2-3x)(x-1)=0
x=2/3 or x=1
(2) 同样的方法:
3(x-5)(x-5)=(x+5)(x-5)
(x-5)(3x-15)-(x-5)(x+5)=0
(x-5)(3x-15-x-5)=0
(x-5)(2x-20)=0
x=5 or x=10
(1) X(2-3X)+(3X-2)=0
(2) 3(X-5)^=X^-25
参考答案:(1) 用提公因式法:
(2-3x)(x-1)=0
x=2/3 or x=1
(2) 同样的方法:
3(x-5)(x-5)=(x+5)(x-5)
(x-5)(3x-15)-(x-5)(x+5)=0
(x-5)(3x-15-x-5)=0
(x-5)(2x-20)=0
x=5 or x=10