Answer:
Step-by-step explanation:
Get the roots first
y = (x -1)(x - 2)
When y = 0, the two factors in turn can be equated to zero. That gives you the roots
x - 1 = 0 Add 1 to both sides
x = 1
x - 2 = 0 Add 2 to both sides
x = 2
Now you need to worry about the leading coefficient. Just put a 3 in front of the first factor.
y = 3(x - 1)(x - 2) Remove the brackets.
y = 3(x^2 - x - 2x + 2) Combine
y = 3(x^2 - 3x - 2) Remove the brackets.
Answer: y = 3x^2 - 9x - 6
