Question 677976
x=1/3

Multiply 3 on both sides:

3x = 1

subtract 1.

3x-1

x = 1/4

By the same method:

4x-1

So a quadratic function with roots 1/3 and 1/4 is (3x-1)(4x-1)

FOIL to get:

12x^2-4x-3x+1

which is  12x^2-7x+1

2)

x=-1/2  --->  (2x+1)

x=-2/3  ----> (3x+2)

FOIL that out to get 6x^2+7x+2