In diagram A, we can see that this parabola has 2 roots, diagram B has 1 root and diagram C has no roots. What type of roots the equation has can be shown by the discriminant.

Solution First, we need to find which number when substituted into the equation will give the answer zero. f (1) = (1) 3 + 4 (1) 2 + (1) 6 = 0 Therefore (x 1) is a factor.

So do we. Let's solve them together. Quadratic equations are polynomials that include an x², and teachers use them to teach students to find two solutions at once.

Once you have 5–√, you can easily multiply it by –1 to get a second root: – 5–√. These two equations differ in another critical way. The roots of x2 – 5 = 0 help solve lots of other equations in our ...