公式法解方程,请写出过程,

x^2+x-12=0x1=-1/2+(1/4+12)^0.5=-1/2+(49/4)^0.5=-1/2+7/2=3x2=-1/2-(1/4+12)^0.5=-1/2-(49/4)^0.5=-1/2-7/2=-4x^2-√2x-1/4=0x1=(√2)/2+(2/4+1/4)^0.5=√2/2+(√3)/2=(√2+√3)/2x2=(√2)/2-(2/4+1/4)^0.5=√2/2-...