Question

multiply. write the answer in standard form:

3i(-5+i)

Answer 1

3i(-5+i)?

Answer 2

yeah. it's for algebra 2, complex (imaginary) numbers.

Answer 3

−3−15i

Answer 4

can you explain how you got it though?

Answer 5

You have to simplify the real and imaginary parts of the expression.

Answer 6

ok ty!
but can you help me b/c your explanations usually help me
@jhonyy9

Answer 7

This is the question
3i(-5+i)
First distribute
-15i + 3i^2
Now I = sqrt(-1)
so if we do i^2 we get -1
so -15i + 3(-1)
equals -3-15i

Answer 8

\(\color{#0cbb34}{\text{Originally Posted by}}\) @darkknight
This is the question
3i(-5+i)
First distribute
-15i + 3i^2
Now I = sqrt(-1)
so if we do i^2 we get -1
so -15i + 3(-1)
equals -3-15i
\(\color{#0cbb34}{\text{End of Quote}}\)
ty!!