2log5(下标)25-3log2(下标)32怎么算?

问题描述:

2log5(下标)25-3log2(下标)32怎么算?

2log5(25)-3log2(32)
=2×[2log5(5)]-3[5log2(2)]
=2×2-3×5
=4-15
=-11