i) What are the roots of the quadratic equation x2 = 9?
Answers
Answered by
92
To Find:
Roots of the quadratic equation x² = 9
Solution:
x² = 9
x = √9
x = +3, -3
Answer:
Therefore, the roots of the quadratic equation x² = 9 is +3, -3.
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Answered by
8
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.
Step-by-step explanation:
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