21 is discontinuous. Find the values of x for which f(x) = 12-3x+2 A. 2 and 3 B. -2 and 3 C. 1 and 2 D. 1 and 2 Find y' if y = vx(x + 2). A. x + 2x B. x2 + 1 2x C. - x + X 3x2 1 D. + 2 2391 3 is discontinuous. x Zx-8 Find the values of x for which f(x) = A. 2 and 4 B. 2 and -4 C. 1 and 3 D. -1 and 8 Differentiate: f(x) = (3x2 + x) (8x - 7). A. 17x2 + 33x + 8 B. 72x2 - 26x - 7 C. 24x2 - 13x + 1 D. 16x2 + 23x - 3