方程16x^2+8x+3=0的解?
问题描述:
方程16x^2+8x+3=0的解?
答
16x^2+8x+3=0
x^2+0.5x+0.1875=0
x^2+0.5x+0.0625=-0.125
(x+0.25)^2=-0.125
x1=0.5*根号-0.5减0.25
x2=0.5*根号-0.5加0.25
答
16x^2+8x+3=0
(4x+1)^2=-2
4x+1=正负i*根号下2
x=(正负i*根号下2 -1)/4
根号不会打,正负也不会,