SOLUTION: THE SQUARE OF A NUMBER DECREASED BY 3 TIMES THE NUMBER IS 18. FIND THE NUMBER

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Question 962897: THE SQUARE OF A NUMBER DECREASED BY 3 TIMES THE NUMBER IS 18. FIND THE NUMBER
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
The question as written is ambiguous, could be one of two equations.
x=the number
EQUATION 1:
x%5E2-3x=18
x%5E2-3x-18%29=0
%28x-6%29%28x%2B3%29=0
x-6=0 or x%2B3=0
x=6 or x=-3
ANSWER 1: The number can be 6 or -3
---------OR---------
EQUATION 2:
%28x%5E2-3%29%28x%29=18
x%5E3-3x=18
The only real solution to this equation is x=3.
If you need help with the imaginary solutions for this equation,
message me.