Question

-3x平方+6x-2=0 怎么算

Answer 1

楼主，您好：埋祥蚂
-3x²+6x-2=0
x²-2x+2/3=0
（x-1）²=1/3
x-1=正负（√3）/3
x1=+（√3）/3，x2=-（√3）/3。弯埋
谢谢采纳，祝您学习进步宴塌！~

Answer 2

3x²-6x+2=0
∵a=3, b=-6, c=2
b²-4ac=(-6)²－竖银闹4×3×2=12
∴搏袜x=[-(-6)±√12]/(2×3)
=(6±2√3)/6
=(3±√3)/3
x1=(3+√3)/余罩3
x2=(3－√3)/3

Answer 3

-3x平方+6x-2=0
3x²-6x+2=0
x²-2x+2/饥举3=0
x²-2x+1=1/3
(x-1)²烂猜碧=1/3
x-1=±1/3√3
∴x=1±1/3√兆敏3

Answer 4

-3x²+6x-2=0
3x²-6x+2=0
x²-2x+2/3=0
x²-2x+1-1+2/3=0
（绝伍握x-1)²=1/3
x1=根号3/橘乱3+1 x2=-根号3/并庆3+1

Answer 5

－3x²核伏渣＋6x－2=0
3x²－6x＋厅兆2=0
x=﹙6±√﹙6²－4×3×2﹚﹚／﹙2×3﹚=﹙6±2√3﹚／6=﹙3±√3﹚／3
x=﹙3＋√改悄3﹚／3, x=﹙3－√3﹚／3