SOLUTION: If the square of a positive integer is added to 4 times the integer, the result is 45. Find the integer.

SOLUTION: If the square of a positive integer is added to 4 times the integer, the result is 45. Find the integer.

Algebra.Com

Question 914567: If the square of a positive integer is added to 4 times the integer, the result is 45. Find the integer.
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
x^2 + 4x = 45
x^2 + 4x - 45 = 0
(x + 9)(x - 5) = 0

The integer is positive, so x = 5.
RELATED QUESTIONS
if the square of a positive integer is added to three times the integer is added to three (answered by ankor@dixie-net.com)

If the square of a positive integer is added to 6 times the integer, the result is 475.... (answered by fractalier)

if the square of a positive integer is added to three times the integer, the result is... (answered by CubeyThePenguin)

if the square of a positive integer is added to 3 times the integer, the result is 154.... (answered by stanbon,josgarithmetic)

if the square of a positive integer is added to 6 times an integers, the result is 135.... (answered by mananth)

If 5 is added to the square of an integer, the result is 4 less than 10 times that... (answered by ankor@dixie-net.com,josgarithmetic)

If the square of a positive integer is added to 3 times the integer, the results is 40.... (answered by mananth)

If 3 times the square of an integer is added to 1 times the integer, the result is 2.... (answered by Alan3354)

If three is added to twice the square of an integer, the result is equal to seven times... (answered by DrBeeee,ben720)