I believe the answer is 2 :) .
Answer:


Step-by-step explanation:
i is an imaginary unit, this means

Rewrite -5 as 
then

Rewrite -25 as 
then

XZ=XY+YZ
JL=JK+KL
use the trigonometric values table or unit circle to calculate the expression
I’m pretty sure the answer is 30!
Answer:
3-10-(15) equals 8.
Step-by-step explanation:
3-10 equals -7. Then -(-15) becomes a positive because two negatives make a positives producing +15 so it becomes -7+15 which finally becomes 8.