what are the roots of quadratic equation
![x {?}^{2} = 9 x {?}^{2} = 9](https://tex.z-dn.net/?f=x++%7B%3F%7D%5E%7B2%7D+%3D+9)
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Answer:
The roots are 3 and -3
Step-by-step explanation:
x² = 9
x² - 9 = 0
x² - 3² = 0
*Identity—a² - b² = (a+b)(a-b)*
(x+3)(x-3) = 0
x + 3 = 0
x = -3
x - 3 = 0
x = 3
The roots are 3 and - 3
Hope it helps you:)
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