Question

What the roots of the quadratic equation x^2 = 9 ?​

Answer 1

Answer:

3

Step-by-step explanation:

x² = 9

⇒ x = √9 = 3

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Answer 2

Answer:

x = −3 or 3.

Step-by-step explanation:

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.