Coefitient of a binomial expansion is given by nCr
Here, n = 7, r = 3 - 1
7C2 = 21
F(x)= x² + 5, is just a parabola shfited upwards by 5 units, so, is a smooth graph and no abrupt edges, so from 0 to 3, is indeed differentiable and continuous. So Rolle's theorem applies, let's check for "c" by simply setting its variable to 0, bear in mind that, looking for "c" in this context, is really just looking for a critical point, since we're just looking where f'(c) = 0, and is a horizontal tangent line.
Answer:
63,674
Step-by-step explanation:
70,230-6556
=63,674
You can reduce the percentages to fractions:


So, we have

