问题
计算题
计算:
(1)(﹣1)2×2+(﹣2)3÷4;
(2)9a﹣2b﹣2(3a﹣b).
答案
解:(1)(﹣1)2×2+(﹣2)3÷4,
=1×2+(﹣8)÷4,
=2+(﹣2),
=0;
(2)9a﹣2b﹣2(3a﹣b),
=9a﹣2b﹣6a+2b,
=3a.
计算:
(1)(﹣1)2×2+(﹣2)3÷4;
(2)9a﹣2b﹣2(3a﹣b).
解:(1)(﹣1)2×2+(﹣2)3÷4,
=1×2+(﹣8)÷4,
=2+(﹣2),
=0;
(2)9a﹣2b﹣2(3a﹣b),
=9a﹣2b﹣6a+2b,
=3a.