Answer:
Expand it.
(1+2i)^3 is equal to (1+2i)(1+2i)(1+2i).
Multiply everything out (being sure to multiply <em>every</em> term. (1+2i) * (1+2i) = 1+2i+2i+4i^2.
i is the square root of negative one, so i^2 is just -1. 1+2i+2i-4 is what you get from the first two, so now simplify that:
1-4 + 2i+2i = (-3+4i) and now multiply that by (1+2i):
(-3+4i) * (1+2i) = -3 - 6i +4i +8i^2.
Simplify again, and the answer is: -11-2i
Step-by-step explanation:
I hope this helps - really my only tip is don't spend time thinking about what i is, that just hurts your brain. Just remember that i^2 is equal to negative one, and treat it like regular multiplication and you will be fine.
Step-by-step explanation:
Taking the first coordinate point (3,16.5)
where x= 3 and y= 16.5
optionB
the answer for your question is A :>
Answer:
Yes.
Step-by-step explanation:
3:5= 1.5:2.5
Each number is divided or multiplyed by the same number.
Ex. 3/2=1.5 and 5/2=2.5
Hope that helps idk if its right though lol
