Question 113295
X(X+2)=143
X^2+2X=143
X^2+2X-143=0
(X-11)(X+13)=0
X-11=0
X=11 ANSWER.
X+13=0
X=-13 ANSWER.
PROOF
11(11+2)=143
11*13=143
143=143
-13(-13+2)=143
-13*-11=143
143=143