quadratic formulat is used when
a^2+bx+c=0
x= [tex] \frac{-b+/- \sqrt{b^{2}-4ac} }{2a} [/tex]
4m^2+3m-1=0
a=4
b=3
c=-1
input
x= [tex] \frac{-3+/- \sqrt{3^{2}-4(4)(-1)} }{2(4)} [/tex]
x= [tex] \frac{-3+/- \sqrt{9+16} }{8} [/tex]
x= [tex] \frac{-3+/- \sqrt{25} }{8} [/tex]
x= [tex] \frac{-3+/-5 }{8} [/tex]
x= [tex] \frac{-8}{8} [/tex] or [tex] \frac{2}{8} [/tex]
x=-1 or 1/4
