Posted by **B.B.** on Friday, September 18, 2009 at 6:55am.

I am stumped could someone please explain this problem?

Give the solutions to the following quadratic equation by examining the graph of the related quadratic function:

Graph: y=x^2+2x-15

Equation: x^2+2x-15=0

Thanks so much.

- Math -
**Reiny**, Friday, September 18, 2009 at 7:33am
algebraic solution:

(x+5)(x-3) = 0

so x = -5 or x = 3

When you graphed it, did you not get a parabola that opened upwards and crossed the x-axis at -5 and 3 ?

- Math -
**drwls**, Friday, September 18, 2009 at 7:34am
We can't draw graphs for you; you can and should do that yourself.

Since the equation can be factored to (x+5)(x-3) = 0,

the solutions are x=-5 and +3.

## Answer This Question

## Related Questions

- Math - I am stumped on this problem could someone please help? Give the ...
- ALGEBRA - What does it mean to give the solutions to the following quadratic ...
- math - State the solutions, or estimated solutions, to each quadratic equation ...
- math - Sketch the graph of a quadratic function for which the related quadratic ...
- MATH - Sketch the graph of a quadratic function for which the related quadratic ...
- math - How are the real solutions of a quadratic equation related to the graph ...
- math - How are the real solutions of a quadratic equation related to the graph ...
- Quadratic Functions - Please explain to me how to do the following problems, I ...
- Math - I can't remember how you find the roots of quadratic equations other than...
- Math - I can't seem remember the rules for this.Can someone please help me with ...

More Related Questions