Question

一元二次方程[直接开平方法]4（x+3）^2-16=03-(2x-1)^2=0(3x-1)^2=(x+1)^2

Answer 1

4（x+3）²-16=0(x+3)²=4x+3=±2x=-5,x=-13-(2x-1)²=0(2x-1)²=32x-1=±√3x=(1-√3)/2,x=(1+√3)/2(3x-1)^2=(x+1)^2 3x-1=x+1或3x-1=-(x+1)=-x-1x=1,x=0