\frac { 12 } { \frac { 2 } { 2 } } + \frac { \sqrt { 49 } } { 0,5 } =
Evaluate
26
Factor
2\times 13
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\frac{12}{1}+\frac{\sqrt{49}}{0,5}
Divide 2 by 2 to get 1.
12+\frac{\sqrt{49}}{0,5}
Anything divided by one gives itself.
12+\frac{7}{0,5}
Calculate the square root of 49 and get 7.
12+\frac{70}{5}
Expand \frac{7}{0,5} by multiplying both numerator and the denominator by 10.
12+14
Divide 70 by 5 to get 14.
26
Add 12 and 14 to get 26.
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}