Evaluate
\left(7x-3y\right)\left(5x+4y\right)
Expand
35x^{2}+13xy-12y^{2}
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35x^{2}-15xy+28yx-12y^{2}
Apply the distributive property by multiplying each term of 5x+4y by each term of 7x-3y.
35x^{2}+13xy-12y^{2}
Combine -15xy and 28yx to get 13xy.
35x^{2}-15xy+28yx-12y^{2}
Apply the distributive property by multiplying each term of 5x+4y by each term of 7x-3y.
35x^{2}+13xy-12y^{2}
Combine -15xy and 28yx to get 13xy.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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