Find f (1) if

f (x) = x2 + 2x2 - x-1.

f (1) = 2

Step-by-step explanation:

Step 1: Identify the function

f (x) = x^2 + 2x^2 - x - 1

Step 2: Simplify the function

f (x) = 3x^2 - x - 1

Step 3: Set x to 1 in the function

f (1) = 3 (1) ^2 - (1) - 1

f (1) = 3*1 - 1 - 1

f (1) = 3 - 1 - 1

f (1) = 2

Answer: f (1) = 2