Question 325142
X & X+2 ARE THE 2 CONSECUTIVE INTEGERS.
X(X+2)=3(X+X+2)-1
X^2+2X=3(2X+2)-1
X^2+2X=6X+6-1
X^2+2X-6X-5=0
X^2-4X-5=0
(X-5)(X+1)=0
X-5=0
X=5 ANS.
5+2=7 ANS.
X+1=0
X=-1 ANS.
-1+2=1 ANS.
PROOF:
5*7=3(5+7)-1
35=3*12-1
35=36-1
35=35