Evaluate
\left(a+b\right)\left(a+b+3\right)
Expand
a^{2}+2ab+3a+b^{2}+3b
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a^{2}+ab+ba+b^{2}+3a+3b
Apply the distributive property by multiplying each term of a+b+3 by each term of a+b.
a^{2}+2ab+b^{2}+3a+3b
Combine ab and ba to get 2ab.
a^{2}+ab+ba+b^{2}+3a+3b
Apply the distributive property by multiplying each term of a+b+3 by each term of a+b.
a^{2}+2ab+b^{2}+3a+3b
Combine ab and ba to get 2ab.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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