SOLUTION: when 32 is subtracted from the square of a number the result is four times the number. What is the positive solution?

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Question 427194: when 32 is subtracted from the square of a number the result is four times the number. What is the positive solution?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

let number is x.
x^2 - 32 = 4x
=> x^2 -4x -32 = 0
=> x^2 -8x + 4x -32 = 0

=>x(x -8 ) + 4(x -8) = 0
=> (x-8)(x+4) = 0
so, x= 8, -4
so, number is 8