Evaluate the function Find f(x)= 3x^2-x+2 a. x=3 b. x=-5 c. f(2) d. f(m) e. f(x+2)

see explanation

Step-by-step explanation:

Given

f(x) = 3x² - x + 2

To evaluate given values of x, substitute the values of x into f(x)

(a)

f(3) = 3(3)² - 3 + 2 = 3(9) - 1 = 27 - 1 = 26

(b)

f(- 5) = 3(- 5)² - (- 5) + 2 = 3(25) + 5 + 2 = 75 + 5 + 2 = 82

(c)

f(2) = 3(2)² - 2 + 2 = 3(4) = 12

(d)

f(m) = 3m² - m + 2

(d)

f(x + 2) = 3(x + 2)² - (x + 2) + 2 ← expand (x + 2)² using FOIL

            = 3(x² + 4x + 4) - x - 2 + 2

             = 3x² + 12x + 12 - x ← collect like terms

             = 3x² + 11x + 12

answer: huh

step-by-step explanation: