(1)x²+1/6 x-1/3=0
6x²+x-2=0
(2x-1)(3x+2)=0
x=1/2 或x=-2/3
(2) 2x²+5x-1=0
根据求根公式得
x=(-5+√33)/4 或 x=(-5-√33)/4
(3) y²-2y-624=0
(y-26)(y+24)=0
y=26 或 y=-24
(4)(x-3)(2x+1)=-5
2x²-5x+2=0
(x-2)(2x-1)=0
x=2 或x=0.5
(1)x²+1/6 x-1/3=0
6x²+x-2=0
(2x-1)(3x+2)=0
x=1/2 或x=-2/3
(2) 2x²+5x-1=0
根据求根公式得
x=(-5+√33)/4 或 x=(-5-√33)/4
(3) y²-2y-624=0
(y-26)(y+24)=0
y=26 或 y=-24
(4)(x-3)(2x+1)=-5
2x²-5x+2=0
(x-2)(2x-1)=0
x=2 或x=0.5