题目内容
计算:
(1)(2m2n-3)2•(-mn-2)-2;
(2)4x2y-3z÷(-2x-1yz-2)2;
(3)(
)-3-23×0.125+20060+|-1|;
(4)2×(π-3.14)0+8×(3×2)-1+(-
)-4.
(1)(2m2n-3)2•(-mn-2)-2;
(2)4x2y-3z÷(-2x-1yz-2)2;
(3)(
| 1 |
| 2 |
(4)2×(π-3.14)0+8×(3×2)-1+(-
| 1 |
| 2 |
(1)原式=4m4n-6•m-2n4
=4m2n-2;
(2)原式=4x2y-3z÷(4x-2y2z-4)
=x4y-5z5;
(3)原式=8-8×0.125+1+1
=-8-1+1+1
=-7;
(4)原式=2×1+8×
+16
=2+
+16
=19
.
=4m2n-2;
(2)原式=4x2y-3z÷(4x-2y2z-4)
=x4y-5z5;
(3)原式=8-8×0.125+1+1
=-8-1+1+1
=-7;
(4)原式=2×1+8×
| 1 |
| 6 |
=2+
| 4 |
| 3 |
=19
| 1 |
| 3 |
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