Evaluate
\left(x+7\right)\left(2x+1\right)
Expand
2x^{2}+15x+7
Graph
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2x^{2}+x+7\left(2x+1\right)
Use the distributive property to multiply x by 2x+1.
2x^{2}+x+14x+7
Use the distributive property to multiply 7 by 2x+1.
2x^{2}+15x+7
Combine x and 14x to get 15x.
2x^{2}+x+7\left(2x+1\right)
Use the distributive property to multiply x by 2x+1.
2x^{2}+x+14x+7
Use the distributive property to multiply 7 by 2x+1.
2x^{2}+15x+7
Combine x and 14x to get 15x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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