SOLUTION: solve x^2-2x=15 by completing the square a.(-5,3) b.(5,-3) c.(-5,-3) d.(5,3)

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: solve x^2-2x=15 by completing the square a.(-5,3) b.(5,-3) c.(-5,-3) d.(5,3)      Log On


   

Question 194606: solve x^2-2x=15 by completing the square
a.(-5,3)
b.(5,-3)
c.(-5,-3)
d.(5,3)
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%5E2-2x%2B1%29-1=15
:
%28x-1%29%5E2=16
:
x-1=+or-(sqrt(16)
:
x-1=4 and x-1=-4
:
x=5 and x=-3
:
so b is your answer