问题
解答题
(1)计算:3
(2)解方程:3x(x-1)=2x-2 |
答案
(1)原式=9
+2
×51 5
-4×2
=82 2
;2
(2)原方程可化为:3x(x-1)-2(x-1)=0;
(x-1)(3x-2)=0;
x-1=0或3x-2=0,
解得x1=1,x2=
.2 3
(1)计算:3
(2)解方程:3x(x-1)=2x-2 |
(1)原式=9
+2
×51 5
-4×2
=82 2
;2
(2)原方程可化为:3x(x-1)-2(x-1)=0;
(x-1)(3x-2)=0;
x-1=0或3x-2=0,
解得x1=1,x2=
.2 3