求下列各式中x的值.(1)8x3+125=0;(2)(x+2)3=-27.
计算: (1)×÷1 (2)
计算: (1) (2)
计算: (1) (2).
(1)计算: (2)解方程:
(1) (2)2﹣4÷×(﹣) (3)﹣22+4×(﹣3)2+6. (4)