负根号121+根号2又1/4减根号36+三次根号负0.125

问题描述:

负根号121+根号2又1/4减根号36+三次根号负0.125

= -11+3/2-6+0.5
= -17 +2
= -15请问,那么为什么三次根号负0.125等于正0.5,可我算的是负0.5呢?怎么有个负字一开始就有负字吗那,你就是正确的原式 = -11+3/2-6-0.5= -(11+6)+(3/2-0.5)= -17 +1= -16