Question

What is the sum of the square root of 2 and the square root of -18?

O 42
0 421
O 52
O 5ſi

Answer 1

4 ·2i

Explanation:

√2 + √-18

√2 + √9·-2

√2 + 3√-2

(3 +1 )(√2 ·√-2) = 2i

4 · 2i