Evaluate
6
Real Part
6
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3-4i+\left(3+4i\right)
The opposite of -3-4i is 3+4i.
3+3+\left(-4+4\right)i
Combine the real and imaginary parts in numbers 3-4i and 3+4i.
6
Add 3 to 3. Add -4 to 4.
Re(3-4i+\left(3+4i\right))
The opposite of -3-4i is 3+4i.
Re(3+3+\left(-4+4\right)i)
Combine the real and imaginary parts in numbers 3-4i and 3+4i.
Re(6)
Add 3 to 3. Add -4 to 4.
6
The real part of 6 is 6.
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}