Question

The difference of the square of a number and 18 is equal to 3 times that number. Find the positive solution.

Answer 1

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Answer 2

Answer: x=6 or x=-3

Step-by-step explanation:

x^2-18=3x

x^2-3x-18=0

(x-6)*(x+3)=0

x-6=0    x+3=0

x=6        x=-3