2log5(25)-3log2(64) 如题`怎么做?

网友回答

2log5(25)-3log2(64)
=2log5(5^2)-3log2(2^6)
=2*2log5(5)-3*6log2(2)
=4*1-18*1
=-14======以下答案可供参考======
供参考答案1:
4-27供参考答案2:
2乘以2-3乘以6=-14
供参考答案3:
2log5(25)-3log(64)=2log5(5^2)-3log2(2^6)=4log5(5)-18log2(2)=4-18=-14