Evaluate
38
Factor
2\times 19
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2\left(25-15\right)+3-5\left(-3\right)
Multiply 5 and 5 to get 25. Multiply 5 and -3 to get -15.
2\times 10+3-5\left(-3\right)
Subtract 15 from 25 to get 10.
20+3-5\left(-3\right)
Multiply 2 and 10 to get 20.
23-5\left(-3\right)
Add 20 and 3 to get 23.
23-\left(-15\right)
Multiply 5 and -3 to get -15.
23+15
The opposite of -15 is 15.
38
Add 23 and 15 to get 38.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
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