The terms in the sum are given by the sequence

We have

for all
, and the series
clearly diverges, so
must also diverge.
Do you see -8x?
Take half of -8 and square it.
So, (-8)/2 = -4.
(-4)^2 = 16
Now add 16 to both sides.
It's an isosceles triangle because base angles are same( 45°).
Answer:
your answer should look like this.
Step-by-step explanation:
The horizontal line goes through y-intercept -1/2
The answer for this question is k=7