Evaluate
10\left(70-x\right)\left(x-30\right)
Expand
-10x^{2}+1000x-21000
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700x-21000-10x^{2}+300x
Apply the distributive property by multiplying each term of 700-10x by each term of x-30.
1000x-21000-10x^{2}
Combine 700x and 300x to get 1000x.
700x-21000-10x^{2}+300x
Apply the distributive property by multiplying each term of 700-10x by each term of x-30.
1000x-21000-10x^{2}
Combine 700x and 300x to get 1000x.
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