Univariate quadratic equation ax? Discrimination of Roots of +bx+c=0(a≠0)
Univariate quadratic equation ax? There are three kinds of roots of +bx+c=0(a≠0): there are two equal real roots, two unequal real roots and no real roots. The general form of unary quadratic equation is ax? +bx+c=0, then δ = b? -4ac. If δ > 0, the unary quadratic equation has two unequal real roots; If δ = 0, a quadratic equation with one variable has two equal real roots; If δ < 0, the quadratic equation of one variable has no real root.