Evaluate
\left(1-4y\right)\left(9y-1\right)
Expand
-36y^{2}+13y-1
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-36y^{2}+9y+4y-1
Apply the distributive property by multiplying each term of 9y-1 by each term of -4y+1.
-36y^{2}+13y-1
Combine 9y and 4y to get 13y.
-36y^{2}+9y+4y-1
Apply the distributive property by multiplying each term of 9y-1 by each term of -4y+1.
-36y^{2}+13y-1
Combine 9y and 4y to get 13y.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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