Question

Evaluate the following expression: (-7+3i)(5+1)

Answer 1

This one is actually pretty simple. Foil the expression. Then you should get your answer.

Answer 2

add the 5 and 1 in parenthesis first

Answer 3

Sorry, I typed it wrong

Answer 4

It should be (-7+3i)(5+i)

Answer 5

do you know how to distribute?

Answer 6

distribute the 7 into each term in the second expression and the same with the 3i which is just like foiling

Answer 7

Yes, but I just wasn't sure if it was different with imaginary numbers. So it should be -35 -7i + 15i + 4i?

Answer 8

Almost...
-35 -7i + 15i + 3i^2
Now add like terms and remember i^2 = -1

Answer 9

So -35 - 7i + 15i - 3? Which would be -32 -8i?

Answer 10

Excuse me, -32 +8i

Answer 11

Well i would just look at it this way...
-35-3
and...
-7i+15i

Answer 12

So, -32 + 8i would be correct?

Answer 13

Well you forgot the -32 - 3 which equals -38

Answer 14

sorry -35 -3

Answer 15

Ohhhhh duh. Thank you :)

Answer 16

Your welcome :)