额,求解指数方程log5(2x²-3x+1) -log5(x-1)+log5(125)=6
问题描述:
额,求解指数方程log5(2x²-3x+1) -log5(x-1)+log5(125)=6
谢啦,log后的5都是底数!
答
log5{(2x-1)(x-1)/(x-1)}+3=6
log5(2x-1)=3 x=/1
2x-1=125
x=126/2=63