What is expand sqrt((x+iy)^2+4) ?

The solution to expand sqrt((x+iy)^2+4) is sqrt(x^2+2ixy-y^2+4)

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expand sqrt((x+iy)^2+4)

expand

(x + i y)^{2} + 4

x^{2} + 2 i x y - y^{2} + 4

Solution steps

(x + i y)^{2} + 4

Expand

(x + i y)^{2} + 4 : x^{2} + 2 i x y - y^{2} + 4

= x^{2} + 2 i x y - y^{2} + 4

\frac{sin ( x )}{2 ( 1 + cos ( x ) )}

(- 1 + 3 i)^{8}

3 e^{3 x} \cdot (e^{3 x} + 1)

x (0, 1, 2, 3) y (- 1, - 1, - 1, - 1)

2 \cdot (ab (x + a))

What is expand sqrt((x+iy)^2+4) ?
The solution to expand sqrt((x+iy)^2+4) is sqrt(x^2+2ixy-y^2+4)