x=3 or x=-5
Work Step by Step
$x^2+2x-15=0\longrightarrow$ the factors of -15 that sum to 2 are -3,5 $(x-3)(x+5)=0$ Using the 0 product property, $x-3=0\ or\ x+5=0$ $x-3+3=0+3\ or\ x+5-5=0-5$ $x=3\ or\ x=-5$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.