Find the inverse of function f. f(x) = 1/2x +7 / A.) f^-1 (x) = x -7 /
B.) f^-1 (x) = 2x - 7 /
C.) f^-1 (x) = 2x- 14 /
D.) f^-1 (x) = 2x + 1/7 /

The answer is C.) f^-1 (x) = 2x- 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

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: