Answer:
https://youtu.be/IPvdVCMb5r4
I second that what do you mean what’s the question????
Answer:
3n+15
Step-by-step explanation:
three (3) times (
) a number (n) added (+) to fifteen (15)
3n+15 is your answer
Hope this helps!
The real part of the result is the product of the real parts of the factors and the product of the imaginary parts:
a = 15*6 - (-4)(-3) = 90 -12 = 78
_____
You can treat this the same as any other product of binomials except that i² = -1.
... (15 -4i)(6 -3i) = 15(6 -3i) -4i(6 -3i) = 15·6 -15·3i -4·6i +4·3i²
... = 90 -45i -24i +12i² = (90 -12) -69i = 78 -69i
