乘方的计算:-7²+2×(-3)²+(-9)× (-3/1)²打错了,应该是:-7²+2×(-3)³+(-9)× (-1/3)²
问题描述:
乘方的计算:-7²+2×(-3)²+(-9)× (-3/1)²
打错了,应该是:-7²+2×(-3)³+(-9)× (-1/3)²
答
:-7²+2×(-3)³+(-9)× (-1/3)²
=﹣49+2×﹙﹣27﹚-9×﹙1/9﹚
=﹣49-54-1
=﹣﹙49+54+1﹚
=﹣104