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+2x15
Equation: x^2+2x15=0
Thanks so much.

Math  Reiny, Friday, September 18, 2009 at 7:33am
algebraic solution:
(x+5)(x3) = 0
so x = 5 or x = 3
When you graphed it, did you not get a parabola that opened upwards and crossed the xaxis 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)(x3) = 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 ...
 Algebra 2  How are the real solutions of a quadratic equation related to the ...
 Math  I can't remember how you find the roots of quadratic equations other than...
More Related Questions