<span>(-3 + 3i) + (-6 + 6i) =
= -3 + 3i + (-6) + 6i
= 3i + 6i + (-3) + (-6)
= 9i + (-9)
= 9i - 9
</span>
Answer:
The last one is right
Step-by-step explanation:
The two angles on top are supplementary angles meaning they should add up to 180
72+3x=180
3x=180-72
3x=108
x=36
Mark me brainliest!
Answer:
3x^2 - 3x + 18
Step-by-step explanation:
x*3x=3x^2
(x*6)+(-3*3x)=-3x
-3*6=-18
