25乘x^-64=0(x>0).求x的值
问题描述:
25乘x^-64=0(x>0).求x的值
答
25x^2-64=0
x^2=64/25
x=±8/5
25乘x^-64=0(x>0).求x的值
25x^2-64=0
x^2=64/25
x=±8/5