Evaluate
2\left(x-10\right)\left(x-9\right)
Expand
2x^{2}-38x+180
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180-20x-18x+2x^{2}
Apply the distributive property by multiplying each term of 10-x by each term of 18-2x.
180-38x+2x^{2}
Combine -20x and -18x to get -38x.
180-20x-18x+2x^{2}
Apply the distributive property by multiplying each term of 10-x by each term of 18-2x.
180-38x+2x^{2}
Combine -20x and -18x to get -38x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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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