问题
解答题
(1)计算:(-
(2)解方程:x2+5x-6=0. |
答案
(1)原式=1+3×
-(3 3
-1)3
=1+
-3
+1 3
=2;
(2)(x+6)(x-1)=0,
x+6=0或x-1=0,
x=-6或x=1.
(1)计算:(-
(2)解方程:x2+5x-6=0. |
(1)原式=1+3×
-(3 3
-1)3
=1+
-3
+1 3
=2;
(2)(x+6)(x-1)=0,
x+6=0或x-1=0,
x=-6或x=1.