Which of the following equations has the sum of its roots equal to 3?

When are the two roots of a quadratic equation ax2 + bx + c = 0 equal?

If p and q are the roots of the equation ax2 + bx + c = 0, then the value of p2q + q2p is:

Find the sum and product of the roots of the quadratic equation 2x2 + 6x - 16 = 0.

The quadratic equation with roots -4 and 3 is:

If the roots of a quadratic equation are 4 + √3 and 4 - √3, then find that quadratic equation.