Iven f(x) = 2x2 - 4x-3, find f (a + 3)

Greetings from Brasil...

To solve this question, just replace X of function F(X) with A + 3

F(X) = 2X² - 4X - 3

F(A + 3) = 2 · (A + 3)² - 4 · (A + 3) - 3

      (A + 3)² = A² + 2 · A · 3 + 3²

F(A + 3) = 2 · (A² + 6A + 9) - (4A + 12) - 3

F(A + 3) = 2A² + 12A + 18 - 4A - 12 - 3

F(A + 3) = 2A² + 8A + 3

A’b’c’ are the coordinates to the new location of the transformed triangle abc. find the distance between the coordinates points to use for your calculations.

Bbbhkkk