Evaluate
91-35x-7x^{2}
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91-35x-7x^{2}
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\left(2x+14-x^{2}-7x\right)\times 7-7
Apply the distributive property by multiplying each term of 2-x by each term of x+7.
\left(-5x+14-x^{2}\right)\times 7-7
Combine 2x and -7x to get -5x.
-35x+98-7x^{2}-7
Use the distributive property to multiply -5x+14-x^{2} by 7.
-35x+91-7x^{2}
Subtract 7 from 98 to get 91.
\left(2x+14-x^{2}-7x\right)\times 7-7
Apply the distributive property by multiplying each term of 2-x by each term of x+7.
\left(-5x+14-x^{2}\right)\times 7-7
Combine 2x and -7x to get -5x.
-35x+98-7x^{2}-7
Use the distributive property to multiply -5x+14-x^{2} by 7.
-35x+91-7x^{2}
Subtract 7 from 98 to get 91.
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