Evaluate
\left(x-8y\right)\left(x+2y\right)
Expand
x^{2}-6xy-16y^{2}
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x^{2}-8xy+2yx-16y^{2}
Apply the distributive property by multiplying each term of x+2y by each term of x-8y.
x^{2}-6xy-16y^{2}
Combine -8xy and 2yx to get -6xy.
x^{2}-8xy+2yx-16y^{2}
Apply the distributive property by multiplying each term of x+2y by each term of x-8y.
x^{2}-6xy-16y^{2}
Combine -8xy and 2yx to get -6xy.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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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