If the roots of the quadratic equation ax^2 + bx + c = 0 are 3 and 4, what is the value of c in terms of a?

A. 12A

Solve the quadratic equation x^2 - 4x - 5 = 0. What are the roots?

A. -1 AND 5

What is the H.C.F. of the polynomials 2x^2 + 4x and 4x^2 + 8x?

A. 2X

Which of the following is a factor of the polynomial x^2 - 5x + 6?

A. X - 2

If the highest common factor (H.C.F.) of the polynomials 2x^2 - 8 and 4x^2 - 16 is k, what is the value of k?

B. 4(X - 2)