The equation we are solving is a quadratic equation.

我们正在解的方程是一个二次方程。

The graph of a quadratic equation is always a parabola.

二次方程的图形总是一个抛物线。

The quadratic equation has two solutions.

这个二次方程式有两个解。

The roots of a quadratic equation can be found using the quadratic formula.

可以使用二次公式找到二次方程的根。

A negative discriminant indicates that the quadratic equation has no real roots.

负的判别式表明二次方程没有实根。

The discriminant of a quadratic equation determines the nature of its roots.

二次方程的判别式决定了其根的性质。

If the discriminant is positive, the quadratic equation has two real roots.

如果判别式为正，二次方程有两个实根。

There are two roots in the quadratic equation

二次方程有两个根

Well, this is a quadratic equation in v of t.

这是关于vt的,二次方程。

The child then knows how to solve a quadratic equation.

于是学生就会解二次方程了.