Question

2i(7-i)=
Multiply. Write the answer in standard form.

Answer 1

2 + 14i

Explanation:

(i) Distribute

`2i(7-i) = 14i - 2i^2`

(ii) Remember:
`i^2 = -1`

(iii) Substitute
`i^2 = -1` into the equation

`14i-2(-1)`

Standard Form: a + bi

-> 2 + 14i