Question

What are the zeroes of the function
y = 3(x-a)(x+b)
in terms of a and b?

1. x = -a and x = b
2. x = a and x = -b
3. x = -3a and x = 3b
4. x = 3a and x = -3b

Answer 1

Option 2 because: Set a and b to zero and then solve
Solve for a    x-a=0
                     x=a
Solve for b     x+b=0
                      x=-b