Question

4x^2+8x-3=0 . 2x^2+1=3x 配方法解方程

Answer 1

4x^2+8x-3=0

4(x+1)^2 -7=0

x+1 = ±√7/2

x = (-2±√7)/2

2x^2+1=3x

2(x- 3/2)^2 - 7/2 =0

x- 3/2 = ±√7/2

x = (3±√7)/2