问题
解答题
计算: (1)(-4)2÷5
(2)(-10)2-5×(-3×2)2+23×10. |
答案
(1)(-4)2÷5
×(-2)2+8+(-2)2×(-1 3
)2 3
=16×
×4+8+4×(-3 16
)2 3
=12+8+(-
)8 3
=20+(-
)8 3
=
.52 3
(2)(-10)2-5×(-3×2)2+23×100
=100-5×(-6)2+8×10
=100-5×36+80
=100-180+80
=0.