SOLUTION: If 9 is subtracted from 4 times the square of a number,then the result is 3. Find the number.

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Question 975532: If 9 is subtracted from 4 times the square of a number,then the result is 3. Find the number.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
4x^2-9=3
That is 9 subtracted from 4 times the square of a number x.
4x^2-12=0
4(x^2-3)=0
x= +/- sqrt(3)
Square (sqrt(3)) and get 3.
Four times 3 is 12.
Subtract 9 and get 3.