Evaluate
4\left(51-x\right)\left(x-42\right)
Expand
-4x^{2}+372x-8568
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-4x^{2}+204x+168x-8568
Apply the distributive property by multiplying each term of x-42 by each term of -4x+204.
-4x^{2}+372x-8568
Combine 204x and 168x to get 372x.
-4x^{2}+204x+168x-8568
Apply the distributive property by multiplying each term of x-42 by each term of -4x+204.
-4x^{2}+372x-8568
Combine 204x and 168x to get 372x.
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