SOLUTION: Identify the X intercept in the graph y=3x^2 + 19x -40

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Identify the X intercept in the graph y=3x^2 + 19x -40       Log On


   

Question 379909: Identify the X intercept in the graph y=3x^2 + 19x -40
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The x-intercepts are exactly the roots of the quadratic function. Then (3x - 5)(x +8) = 0, or x = 5/3, -8.