What is expand (z-2+sqrt(6)i)(z-2-sqrt(6)i) ?

The solution to expand (z-2+sqrt(6)i)(z-2-sqrt(6)i) is z^2-4z+10

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expand (z-2+sqrt(6)i)(z-2-sqrt(6)i)

expand

(z - 2 + 6 i) (z - 2 - 6 i)

z^{2} - 4 z + 10

Solution steps

(z - 2 + 6 i) (z - 2 - 6 i)

Distribute parentheses

= zz + z (- 2) + z (- 6 i) - 2 z - 2 (- 2) - 2 (- 6 i) + 6 i z + 6 i (- 2) + 6 i (- 6 i)

Simplify

zz + z (- 2) + z (- 6 i) - 2 z - 2 (- 2) - 2 (- 6 i) + 6 i z + 6 i (- 2) + 6 i (- 6 i) : z^{2} - 4 z + 10

= z^{2} - 4 z + 10

(s + \frac{1}{2})^{2}

\frac{d ^{2}}{d x d y} ((f (x, y)) (2 x^{2} + 3 y^{2} - 4 x y + 2 y - 3))

\frac{7 x - 3}{x ( x + 3 ) ( x - 1 )}

(4 + x) (5 + x)

(i w + 1)^{3}

What is expand (z-2+sqrt(6)i)(z-2-sqrt(6)i) ?
The solution to expand (z-2+sqrt(6)i)(z-2-sqrt(6)i) is z^2-4z+10