SOLUTION: The square of a number is 15 more than 2 times the number.

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: The square of a number is 15 more than 2 times the number.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 261075: The square of a number is 15 more than 2 times the number.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The square of a number is 15 more than 2 times the number.
---
Let the number be "x".
Equation:
x^2 = 2x + 15
x^2 -2x - 15 = 0
Factor:
(x-5)(x+3) = 0
x = 5 or x = -3
======================
Cheers,
Stan H.