Evaluate
3\left(x+20\right)\left(2x+5\right)
Expand
6x^{2}+135x+300
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\left(6x+15\right)\left(x+20\right)
Use the distributive property to multiply 3 by 2x+5.
6x^{2}+120x+15x+300
Apply the distributive property by multiplying each term of 6x+15 by each term of x+20.
6x^{2}+135x+300
Combine 120x and 15x to get 135x.
\left(6x+15\right)\left(x+20\right)
Use the distributive property to multiply 3 by 2x+5.
6x^{2}+120x+15x+300
Apply the distributive property by multiplying each term of 6x+15 by each term of x+20.
6x^{2}+135x+300
Combine 120x and 15x to get 135x.
Examples
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y = 3x + 4
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Matrix
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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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