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Braxton Coleman
Mathematics
26 August, 08:29
How do I solve x^2-9=0
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Aleena
26 August, 08:34
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You make x^2 equal 9 so you subtract and get zero. In this case, x = 3 because 3 times itself is 9 and 9-9 = 0
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Cody
26 August, 08:53
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X² - 9 = 0
x² + 3x - 3x - 9 = 0
(x - 3) (x + 3) = 0
x - 3 = 0 or x + 3 = 0
+ 3 + 3 - 3 - 3
x = 3 x = - 3
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