SOLUTION: quadratic equation. Check by substitution or by using a graphing utility ad identifying x-intercepts. 4x^2=19x+30 the solution set is?

Algebra ->  Equations -> SOLUTION: quadratic equation. Check by substitution or by using a graphing utility ad identifying x-intercepts. 4x^2=19x+30 the solution set is?      Log On


   

Question 646094: quadratic equation. Check by substitution or by using a graphing utility ad identifying x-intercepts. 4x^2=19x+30 the solution set is?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
4x%5E2=19x%2B30
4x%5E2-19x-30=0....replace -19x with 5x-24x
4x%5E2%2B5x-24x-30=0
4x%5E2-24x%2B5x-30=0
4x%28x-6%29%2B5%28x-6%29=0
%28x-6%29%284x%2B5%29=0
if x-6=0.....=>.....x=6
if 4x%2B5=0.....=>.....4x=-5=>.....x=-5%2F4

+graph%28+600%2C+600%2C+-5%2C+10%2C+-55%2C+10%2C+4x%5E2-19x-30%29+