First you differentiate it. So:
x^3 + 2x - 1 = 3x^2 + 2
at point (2, 1) the x value is 2 so you substitute that into the differentiated equation.
you get 3(2)^2 + 2 = 14
Answer:
540 degrees.
Step-by-step explanation:
I assume that 72 degrees is the measure of an exterior angle. This is the case in a pentagon because 360 / 72 = 5.
So each interior angle measures 180 - 72 = 108 degrees.
The sum of the interior angles = 5 * 108 = 540 degrees.
6/16+5/16= 11/16 since you need common denominators