Evaluate (complex solution)
9\sqrt{5}i\approx 20.124611797i
Real Part (complex solution)
0
Evaluate
\text{Indeterminate}
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9i\sqrt{5}
Factor -405=\left(9i\right)^{2}\times 5. Rewrite the square root of the product \sqrt{\left(9i\right)^{2}\times 5} as the product of square roots \sqrt{\left(9i\right)^{2}}\sqrt{5}. Take the square root of \left(9i\right)^{2}.
Examples
Quadratic equation
{ 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
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Limits
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