求解下列一元二次方程
求一元二次方程
(1) $112y^2+16y-7.68=0$
(2) $112x^2+16x-7=0$
(3) $x^2-14x-232=0$
(4) $5x^2+2x-1=0$
(5) $x^2-2x+\frac{9}{4}=0$
(6) $x^2-\frac{\sqrt{2}}{2}x+\frac{1}{8}=0$
(7) $x^2+2x+\frac{1}{2}=0$
求一元二次方程
(1) $112y^2+16y-7.68=0$
(2) $112x^2+16x-7=0$
(3) $x^2-14x-232=0$
(4) $5x^2+2x-1=0$
(5) $x^2-2x+\frac{9}{4}=0$
(6) $x^2-\frac{\sqrt{2}}{2}x+\frac{1}{8}=0$
(7) $x^2+2x+\frac{1}{2}=0$