9(3x+2)^2-64=0
问题描述:
9(3x+2)^2-64=0
答
9(3x+2)^2-64=0
(3x+2)^2=64/9
3x+3=±8/3
3x=-17/3 或3x=-1/3
x1=-17/9 x2=-1/9