Evaluate
\left(3x-y\right)\left(x+4y\right)
Expand
3x^{2}+11xy-4y^{2}
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3x^{2}-xy+12yx-4y^{2}
Apply the distributive property by multiplying each term of x+4y by each term of 3x-y.
3x^{2}+11xy-4y^{2}
Combine -xy and 12yx to get 11xy.
3x^{2}-xy+12yx-4y^{2}
Apply the distributive property by multiplying each term of x+4y by each term of 3x-y.
3x^{2}+11xy-4y^{2}
Combine -xy and 12yx to get 11xy.
Examples
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Limits
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