this is Calculus

The function f(x) = 5x2 - 4x + 2 satisfies the hypotheses of the Mean Value Theorem on the interval [1, 5). Find all values of c that satisfy the conclusion of the theorem. Answer(s) must be exact, no credit for decimal representations. The Mean Value Theorem: Let f be a continuous function on [a, b], and differentiable on (a, b). Then there is a number c E (a, b) such that: f (c) = f (b) - f(a) b - a