Given the function f(x) x-5 all over 3 solve for f^-1(3)

f^-1(3) = 14

Step-by-step explanation:

Set the function value to 3, and solve for x.

... 3 = (x -5)/3

... 9 = x -5 . . . . . multiply by 3

... 14 = x . . . . . . add 5

f^-1(x) at x=3 is 14.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form