用配方法解方程2x눀-5x+3=0

2024-11-24 10:59:01
推荐回答(4个)
回答1:

图片中为配方法:x1=3/2,x2=1.

回答2:

2X^2-5x+3=0
(X-1)(2X-3)=0
X1=1,X2=3/2

配方法:
2X^2-5x+3=0
2(X^2-(5/2)X)+3=0
2(X^2-(5/2)X+25/4-25/4)+3=0
2(X^2-(5/2)X+25/4)-25/2+3=0
2(X-5/4)^2-19/2+3=0
请采纳!!!

回答3:

2x²-5x+3=0
2(x-1.25)²=1/8
(x-1.25)²=1/16=0.25²
所以x-1.25=-0.25或x-1.25=0.25
得x=1或x=1.5

回答4:

(2x-3)(x-1)=0
2x-3=0
x1=3/2
x-1=0
x2=1