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Ariana Walters
Mathematics
29 February, 05:56
What are the roots of the equation x^2 + - 9=0
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Mohammed Mayer
29 February, 06:14
0
x = 3 or x = - 3
Step-by-step explanation:
If x^2 - 9 = 0 we transfer 9 to the right side of the equation and it's change negative sign to positive while doing so
now we have x^2 = 9 the square of a number must be equal to a positive number in real numbers
but the root can be either negative or positive so we say x = 3 or x = - 3
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