SOLUTION: If x=3,is a solution of the equation X^2+kx+15, find the value of k .Hence find the other solution of the equation

Algebra ->  Test -> SOLUTION: If x=3,is a solution of the equation X^2+kx+15, find the value of k .Hence find the other solution of the equation      Log On


   



Question 1073451: If x=3,is a solution of the equation
X^2+kx+15, find the value of k .Hence find the other solution of the equation

Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
3%5E2%2B3k%2B15=0
3%2Bk%2B5=0
k=-8


x%5E2-8x%2B15=0
%28x-3%29%28x-5%29=0
-
x=5-------the other solution

Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
There is NO equation in your post.