计算复的3的二次方除以九分之五乘以(-三分之二)的二次方-1,详细点
问题描述:
计算复的3的二次方除以九分之五乘以(-三分之二)的二次方-1,详细点
答
(-3)^2 = 9
9 / (5/9) =81/5
(81/5) * (-2/3) = - 162/15
(-162/15)^2 = 25921/225
25921/225 - 1= (25921-225)/225 = 25696/225