Given that the roots of a quadratic equation are 20 and -7, what is the corresponding quadratic equation?

Explanation

A quadratic equation with roots r1 and r2 can be written as x² - (r1 + r2)x + (r1 × r2) = 0. Here, the sum of the roots is 20 + (-7) = 13, and the product is 20 × (-7) = -140. Substituting these values gives the equation x² - 13x - 140 = 0. Among the options, option A matches this form.