Question

Simplify the given expression.

(7 − 3i) • (2 − i)

Answer 1

You can use distributive property of multiplication.
\[(7-3i) (2-i) = 7 (2-i) - 3i(2-i)\]
then distribute
\[7(2) + 7(-i) - 3i(2) -3i(-i)\]
then evaluate. tell me your answer

Answer 2

what does -I equal?

Answer 3

-i *

Answer 4

i got 10.

Answer 5

it's just like a variable
anyway if i means imaginary number, then it is equal to sqrt(-1)
how do you get 10 :0

Answer 6

7(-i) = -7i ?

Answer 7

yea

Answer 8

ok let me try it again

Answer 9

-3i(-i) ?

Answer 10

\[3i^2\]