SOLUTION: How to find x-intercepts from this equation: f(x) = 3x^2 + x -4. Then round answers to two decimal places.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: How to find x-intercepts from this equation: f(x) = 3x^2 + x -4. Then round answers to two decimal places.       Log On


   

Question 1151576: How to find x-intercepts from this equation: f(x) = 3x^2 + x -4. Then round answers to two decimal places.
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
The x-intercepts are where f(x) = 0: +3x%5E2+%2B+x+-+4+=+0+


+%283x%2B4%29%28x-1%29+=+0+



3x+4 =0  ===>  x = -4/3

x-1 = 0  ===>  x = 1





Those are the x-intercepts



graph%28400%2C400%2C-4%2C4%2C-5%2C5%2C+grid%281%29%2C+3x%5E2%2Bx-4%29+