Solve for x
x = -\frac{21}{2} = -10\frac{1}{2} = -10.5
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x^{2}-8x-84=x^{2}
Use the distributive property to multiply x+6 by x-14 and combine like terms.
x^{2}-8x-84-x^{2}=0
Subtract x^{2} from both sides.
-8x-84=0
Combine x^{2} and -x^{2} to get 0.
-8x=84
Add 84 to both sides. Anything plus zero gives itself.
x=\frac{84}{-8}
Divide both sides by -8.
x=-\frac{21}{2}
Reduce the fraction \frac{84}{-8} to lowest terms by extracting and canceling out 4.
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