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When 18 is subtracted from the square of a number, The result is three times the number. find the negative solution

 Mar 30, 2020
 #1
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+1

We can write an equation for this:

 

x^2-18=3x

x^2-3x-18=0

 

Factor this equation to get:

 

(x-6)(x+3)

 

Thus, our negative solution will be -3.

 Mar 30, 2020

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