Solve the equation by the quadratic formula 4x2 x 30 x Type
     Solve the equation by the quadratic formula.  4x^2 +x -3=0  x=  (Type an exact answer, using radicals as needed. Express comp   
  
  Solution
given 4x2 + x - 3 =0
we know solution of quadratic equation ax2 + bx + c=0 is
x = [ -b +/- sqrt(b2-4ac]/2a
now a=4,b=1,c=-3
and x = [-1+/- sqrt(1-4*4*(-3)) ] /2*4
= [- 1+/- 7 ]/8
x = -1, x=3/4

