Question

math
$3(7 + i7) + i(7 + i7) solve it$
​

Answer 1

Answer:

The Answer is (1+i)(28) or 28+28i

Step-by-step explanation:

$3(7 + 7i) + i(7 + 7i) \\ = 21 + 21i + 7i \: + 7 {i}^{2}$

Now let's take the common

$21(1 + i) + 7i(1 + i) \\ = (1 + i)(21 + 7) \\ = (1 + i)(28) \\ = > 28 + i$

Now Please Mark it BRAINLIEST