1.

NOTESwhat are the roots of the quadratic equation.X2 9.​

Answer»

Step-by-step explanation:

Solving Quadratics Using Square Roots

One way to SOLVE the quadratic equation X2 = 9 is to subtract 9 from both sides to get one side equal to 0: x2 – 9 = 0. The EXPRESSION on the left can be FACTORED: (X + 3)(x – 3) = 0. Using the zero factor property, you know this means x + 3 = 0 or x – 3 = 0, so x = −3 or 3.



Discussion

No Comment Found

Related InterviewSolutions