Question

what are the roots
of
the quadratie equaton x²=9​

Answer 1

Answer:

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.

Answer 2

Answer:

x² = 9

x² - 9 = 0

x² - 3² = 0

(x+3 ) (x-3) = 0

x=3 , -3

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