Question

Can I have some help please? Algebra 2 is not my strong suit.
Multiply: i(4−7i)

Answer 1

Answer for the problem is 4i-7i^2

Answer 2

We have the following equation:

i(4-7i)

Multiplying:

4i - 7(i^2)

So we know that i = sqrt(-1), then i^2 = -1.

For that reason:

4i - 7(i^2) = 4i - 7(-1) = 4i + 7

So the answer is: 4i +7