Question

2x的平方-3x+2分之1=0（用配方法解）过程！现在就要

Answer 1

2x的平方-3x+2分之1=0 同时乘以2得到 4x^2-6x+1=0
（2x-1.5）^2=1.5*1.5-1=1.25
x=（1.5+根号5/2）/2或（1.5-根号5/2）/2

Answer 2

2x²-3x+1/2=0
2(x²-3x/2)+1/2=0
2[(x²-3x/2+(3/4)²]-(3/4)²×2+1/2=0
2(x-3/4)²-9/8+1/2=0
2(x-3/4)²=5/8
(x-3/4)²=5/16
x-3/4=±√(5/16)
x=3/4±√5/4

Answer 3

2x^2 -3x +1/2=0
2x^2 -3x =-1/2
2( x^2 -3x/2)=-1/2
2(x^2-3x/2+9/16)=-1/2 +9/8
2(x-3/4)^2=5/8
(x-3/4)^2=5/16

X-3/4=正负(根号5）/4
x=正负(根号5)/4 +3/4

Answer 4

2X²-3X+1/2=0
解： 2（X²-3/2X+(3/4)²)-2*（3/4）²+1/2=0
2（x-3/4）²-9/8+1/2=0
2（x-3/4）²=5/8
（x-3/4）²=5/16
x-3/4=（根号5）/4或x-3/4=-（根号5）/4
x1=（根号5+3）/4，x2=（-根号5+3）/4