Question 748253
9X=X^2+18
X^2-9X+18=0
(X-6)(X-3)=0
X-6=0
X=6 ANS.
X-3=0
X=3 ANS.
PROOFS:
9*6=6^2+18
54=36+18
54=54
9*3=3^2+18
27=9+18
27=27