Evaluate
-4x^{2}+38x-91
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-4x^{2}+38x-91
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\left(-2x^{2}+12x+7x-42\right)\times 2-7
Apply the distributive property by multiplying each term of -2x+7 by each term of x-6.
\left(-2x^{2}+19x-42\right)\times 2-7
Combine 12x and 7x to get 19x.
-4x^{2}+38x-84-7
Use the distributive property to multiply -2x^{2}+19x-42 by 2.
-4x^{2}+38x-91
Subtract 7 from -84 to get -91.
\left(-2x^{2}+12x+7x-42\right)\times 2-7
Apply the distributive property by multiplying each term of -2x+7 by each term of x-6.
\left(-2x^{2}+19x-42\right)\times 2-7
Combine 12x and 7x to get 19x.
-4x^{2}+38x-84-7
Use the distributive property to multiply -2x^{2}+19x-42 by 2.
-4x^{2}+38x-91
Subtract 7 from -84 to get -91.
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