Question 355131
Hi,
20x2-13x-15 = 0

*Note: Using quadratic formula to solve for a equation in the form ax^2 + bx + c = 0
.
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
.
 {{{x = (13 +- sqrt( 1369 ))/(40) }}}
.
 {{{x = (13 +- 37)/(40) }}}
.
{{{x = -24/(40)=(-6/10) = -.6 }}}
x = -.6
.

{{{x = 50/(40)=(5/4) }}}
x = 1.25