(x-20)(-2x+80
Evaluate
2\left(40-x\right)\left(x-20\right)
Expand
-2x^{2}+120x-1600
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-2x^{2}+80x+40x-1600
Apply the distributive property by multiplying each term of x-20 by each term of -2x+80.
-2x^{2}+120x-1600
Combine 80x and 40x to get 120x.
-2x^{2}+80x+40x-1600
Apply the distributive property by multiplying each term of x-20 by each term of -2x+80.
-2x^{2}+120x-1600
Combine 80x and 40x to get 120x.
Examples
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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