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4a^{2}+a-13
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4a^{2}+a-13
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a^{2}-5a-1+3a^{2}+6a-12
Use the distributive property to multiply 3 by a^{2}+2a-4.
4a^{2}-5a-1+6a-12
Combine a^{2} and 3a^{2} to get 4a^{2}.
4a^{2}+a-1-12
Combine -5a and 6a to get a.
4a^{2}+a-13
Subtract 12 from -1 to get -13.
a^{2}-5a-1+3a^{2}+6a-12
Use the distributive property to multiply 3 by a^{2}+2a-4.
4a^{2}-5a-1+6a-12
Combine a^{2} and 3a^{2} to get 4a^{2}.
4a^{2}+a-1-12
Combine -5a and 6a to get a.
4a^{2}+a-13
Subtract 12 from -1 to get -13.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}