SOLUTION: Solve by using the quadratic formula: x^2-5x-14=0

Algebra.Com
Question 329289: Solve by using the quadratic formula:
x^2-5x-14=0
Answer by vleith(2983)   (Show Source): You can put this solution on YOUR website!
Check out this link and look for helpers to solve a slew of basic problems.
http://www.algebra.com/tutors/all-solvers.mpl
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=81 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 7, -2. Here's your graph:
RELATED QUESTIONS

Solve by using the quadratic formula. x^2 + 5x – 14 =... (answered by jim_thompson5910)
solve by using the quadratic formula?... (answered by checkley75)
Solve by using the quadratic formula. x^2 = 5x + 8 (answered by jim_thompson5910)
Solve by using the quadratic formula. 5x^2 + x = 3 (answered by jim_thompson5910,malakumar_kos@yahoo.com)
Solve by using the quadratic formula. 5x^2 + x = 3 (answered by malakumar_kos@yahoo.com)
Solve by using the quadratic formula. 5x^2 + x = 3 (answered by Edwin McCravy)
Solve by using the quadratic formula. x^2 = –5x – 5 (answered by jim_thompson5910)
Solve by using the quadratic formula x^2 = –5x –... (answered by jim_thompson5910)
Solve by using the quadratic formula. x^2 = –5x – 5 (answered by edjones)