if the square of a positve integer is added to 2 times the integer, the result is 120 [Archive]

jujubeez

Dec 9, 2011, 06:35 PM

find the integer

corrigan

Dec 9, 2011, 08:54 PM

x^2+2x=120 \Rightarrow x^2 +2x -120 = 0, then factor and solve for x. your answer is the positive one.