| Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) |
| Quadratic equation For these solutions to exist, the discriminant First, we need to compute the discriminant Discriminant d=6.25 is greater than zero. That means that there are two solutions: Quadratic expression Again, the answer is: -1.5, -4. Here's your graph: |
Now the solution we get,as you see above,is different from what your book says.
Lets check according to the book.
Now the book says the roots are (-3/4 and -4).
then the expression would become
This is the equation you would need to obtain the roots given in your book.
Hope this helps,
Prabhat