What is expand 1/((x+1-2j)(x+1+2j)) ?

The solution to expand 1/((x+1-2j)(x+1+2j)) is 1/(x^2+2x-4j^2+1)

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expand 1/((x+1-2j)(x+1+2j))

expand

\frac{1}{( x + 1 - 2 j ) ( x + 1 + 2 j )}

\frac{1}{x ^{2} + 2 x - 4 j ^{2} + 1}

Solution steps

\frac{1}{( x + 1 - 2 j ) ( x + 1 + 2 j )}

Expand

(x + 1 - 2 j) (x + 1 + 2 j) : x^{2} + 2 x - 4 j^{2} + 1

= \frac{1}{x ^{2} + 2 x - 4 j ^{2} + 1}

(e - 2 f)^{2}

0.00024375 \cdot \frac{( 1 + 2.9 s )}{( 1 + 0.85 s )}

t \cdot (H (t - 1) - H (t - 5)) + H (t - 5)

(\frac{1}{y}) ((e^{x} + y^{2}) d x + (x y - \frac{e ^{x}}{y} - 2 y^{2}) d y = 0)

127 \cdot (1 - \frac{1}{( 1 + 0.16 ) ^{10.5}})

What is expand 1/((x+1-2j)(x+1+2j)) ?
The solution to expand 1/((x+1-2j)(x+1+2j)) is 1/(x^2+2x-4j^2+1)