Evaluate
38
Factor
2\times 19
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5^{2}\left(\sqrt{2}\right)^{2}-3\sqrt{16}
Expand \left(5\sqrt{2}\right)^{2}.
25\left(\sqrt{2}\right)^{2}-3\sqrt{16}
Calculate 5 to the power of 2 and get 25.
25\times 2-3\sqrt{16}
The square of \sqrt{2} is 2.
50-3\sqrt{16}
Multiply 25 and 2 to get 50.
50-3\times 4
Calculate the square root of 16 and get 4.
50-12
Multiply -3 and 4 to get -12.
38
Subtract 12 from 50 to get 38.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}