负一的三次方除以负二分之九加二的两次方乘以负二分之一的二次方

问题描述:

负一的三次方除以负二分之九加二的两次方乘以负二分之一的二次方

1又9份之2

(-1)³÷﹙-9/2﹚﹢2²×﹙-1/2﹚²
=-1×﹙-2/9﹚-1
=2/9-1
=-7/9

(-1)³÷(-9/2 +2)² ×(-1/2)²
= -1 ÷ 25/4 × 1/4
= -4/25×1/4
= -1/25

(-1)³÷(-9/2 +2)² ×(-1/2)²= -1 ÷ 25/4 × 1/4
=-4/25×1/4
=-16/25