You have to find out what x is because x is an imaginary number
Answer:
- 819
Step-by-step explanation:
The sum to n terms of a geometric series is
= 
where a is the first term and r the common ratio
Here a = 1 and r = - 4 ÷ 1 = - 4, thus
=
=
=
= - 819
I believe the answer is d y=x^3 i hope this helped
There are 3 lines of reflectional symmetry in an equilateral triangle