Solve 6x + 3) = 21. O A. x = -3 and x = -4 O B. x = 3 and x = -3 C. X = -3 and x = 4 D. X = 3 and x = -4 I need this ASAP

Question

asked Aug 23, 2022 66.3k views

1 Answer

NoChinDeluxe · Answer 1 · 2022-08-28T11:23:24+0000

Answer:

18x^2 - 9

Explanation:

y = f(x)= 6x^3 - 9x + 4

dy/dx = d/dx(6x^3) - d/dx(9x) + d/dx (4)

=6.d/dx(x^3) - 9.d/dx (x) + d/dx. (4)

=6.3x^2 - 9.1 + 0 =18x^2 - 9