Question

Which expression is equal to −2i(4−i)?

Answer 1

The answer is A -2-8i

Answer 2

Answer:

The correct option is A.

Step-by-step explanation:

The given expression is

$-2i(4-i)$

We need to find the simplified form of the given expression.

Using distributive property we get

$-2i(4)-2i(-i)$

$-8i+2i^2$

We know that $i^2=-1$. Using this fact we get

$-8i+2(-1)$

$-8i-2$

Write the above expression as a+ib.

$-2-8i$

Therefore the correct option is A.