Evaluate
12\left(x-2y\right)\left(x+y\right)
Expand
12x^{2}-12xy-24y^{2}
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12x^{2}-24xy+12yx-24y^{2}
Apply the distributive property by multiplying each term of 6x+6y by each term of 2x-4y.
12x^{2}-12xy-24y^{2}
Combine -24xy and 12yx to get -12xy.
12x^{2}-24xy+12yx-24y^{2}
Apply the distributive property by multiplying each term of 6x+6y by each term of 2x-4y.
12x^{2}-12xy-24y^{2}
Combine -24xy and 12yx to get -12xy.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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