SOLUTION: Find three consecutive positive even integers such that the product of the second and third integers is twenty more than ten times the first integer.

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Question 312612: Find three consecutive positive even integers such that the product of the second and third integers is twenty more than ten times the first integer.
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
x, x+2, x+4
%28x%2B2%29%28x%2B4%29=20%2B10x
%28x%5E2%2B6x%2B8%29=20%2B10x
%28x%5E2-4x-12%29=0
%28x-6%29%28x%2B2%29=0
x=6,cross%28-2%29 cant be negative
6,8,10 are the 3 numbers
checking
%28x%2B2%29%28x%2B4%29=20%2B10x
%288%29%2810%29=20%2B10%286%29
%2880%29=20%2B%2860%29
80=80