问题
解答题
计算: (1)(2×10-5)-2÷(10-2)3 (2)(x-
|
答案
(1)原式=
×1010÷10-61 4
=
×1010×1061 4
=0.25×1016
=2.5×1015;
(2)原式=
•x2-4 x 2 x-2
=
•(x+2)(x-2) x 2 x-2
=
.2(x+2) x
计算: (1)(2×10-5)-2÷(10-2)3 (2)(x-
|
(1)原式=
×1010÷10-61 4
=
×1010×1061 4
=0.25×1016
=2.5×1015;
(2)原式=
•x2-4 x 2 x-2
=
•(x+2)(x-2) x 2 x-2
=
.2(x+2) x