What is (4+sqrt(-20))/2 ?

The solution to (4+sqrt(-20))/2 is 2+sqrt(5)i

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simplify (4+sqrt(-20))/2

simplify

\frac{4 + - 20}{2}

2 + 5 i

Solution steps

\frac{4 + - 20}{2}

- 20 = 25 i

= \frac{4 + 2 5 i}{2}

Factor out common term

2 : 2 (2 + 5 i)

= \frac{2 ( 2 + 5 i )}{2}

Cancel the common factor:

2

= 2 + 5 i

- x + 6 x

7 x + 6 (x - 1)

\frac{1}{x + 2}

i^{4}

8 \times 1 0^{- 6}