解方程(x+3)²=(5x-2)²
问题描述:
解方程(x+3)²=(5x-2)²
答
(x+3)²=(5x-2)²
x+3=5x-2或x+3=-(5x-2)
x-5x=-3-2或x+3=-5x+2
-4x=-5或6x=-1
即:x=5/4或x=-1/6
答
(x+3)²=(5x-2)²
(x+3)²-(5x-2)²=0
(x+3+5x-2)(x+3-5x+2)=0
(6x+1)(5-4x)=0
x1=-1/6 x2=5/4