SOLUTION: Find the x intercepts of f(x) = 3x^2 -15x -13

Question 392412: Find the x intercepts of
f(x) = 3x^2 -15x -13
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
f(x) = 3x^2 -15x -13
set f(x) to zero and solve for x:
0 = 3x^2 -15x -13
applying the "quadratic formula" we get:
x = {5.753, -0.753}
.
Details of quadratic follows:

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=381 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 5.75320354932386, -0.753203549323856. Here's your graph:

RELATED QUESTIONS
Solve. 3x^2-5x-13=0 Also, find the x-intercepts of f(x) = 3x^2-5x-13. (answered by checkley71)

a) solve 3x^2 - 5x -13 =0 what are the solution? x=? b) find the x-intercepts of f(x) = (answered by drk)

Can you please find the x and y intercepts for... (answered by checkley77)

find the x-intercepts (if any) for the graph of the quadratic function. f(x) =... (answered by jim_thompson5910)

solve 3x^2-7x-13=0find x-intercepts of f(x)=3x^2-7x-13 what are the solutions x= what... (answered by checkley77)

a) solve 3x^2-5x-13=0 b)find the x intercepts of f(x)=3x^2-5x-13 what are the... (answered by jorel1380)

Find the zeros. f(x)=((3x^2-2x-2)/(13+15x)) Enter the exact answers in increasing... (answered by ikleyn)

zeros of a function: find the zeros (i.e. x-intercepts) of the following functions: 1)... (answered by venugopalramana)

a)Solve 3x^2-7x-13=0 b)find the x-intercepts for f(x)= 3x^2-7x-13 Thank... (answered by Alan3354)