It is a polynomial equation of degree two that can be written in the form ax2 + bx + c = 0 where a, b, and c are real number and a ≠ 0?

Which of the following is a quadratic equation?

If a = – 1, b = – 2, and c = 15, the quadratic equation in its standard form is _____.

In the quadratic equation 3x2 + 7x – 4 = 0, which is the quadratic term?

Find the roots of the quadratic equation x2 – 8 = 0.