Answer:
First get the formula for your pattern in the form of TN. Where d represents your difference and a represents your first term. Then equate the -401 to your formula and solve for n
10x3 + 13x² + 13x + 9) = (x2 + x + 1)
1 answer:
You might be interested in
Surface area SA: 
Circumference C:
dividing this you get 
and 
Now let's input the radius
into the Surface area formula...
Circumference C:
Now let's input the radius