解方程:64x^2-81=0,
问题描述:
解方程:64x^2-81=0,
答
64x^2-81=0
x^2=81/64
x=-9/8,x=9/8
解方程:64x^2-81=0,
64x^2-81=0
x^2=81/64
x=-9/8,x=9/8