Mark M. answered 02/02/23
Retired math prof. Calc 1, 2 and AP Calculus tutoring experience.
According to the Fundamental Theorem of Calculus, ∫(from a to b)F'(x)dx = F(b) - F(a), where a < b.
F(8) = F(2) + F(8) - F(2)
By the Fundamental Theorem of Calculus, we have F(8) = F(2) + ∫(from 2 to 8) F'(x)dx
So, F(8) = 8 + ∫(from 2 to 8) x2dx = 8 + (1/3)x3(from 2 to 8)
Evaluate and simplify.