Answer:
23
Step-by-step explanation:
The sum of any two sides of a triangle has to be greater than the other side
Only 23 meets this criteria
i think it is 23
It's just telling you to multiple like 9×1=9 9×2=18 and so on.
x=-4.36
-1809 + 899i or
-1809 + √-899
foil method
i² = -1