Evaluate
-25
Factor
-25
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5\times 7-2\left(9+21\right)
Add 3 and 4 to get 7.
35-2\left(9+21\right)
Multiply 5 and 7 to get 35.
35-2\times 30
Add 9 and 21 to get 30.
35-60
Multiply 2 and 30 to get 60.
-25
Subtract 60 from 35 to get -25.
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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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