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Cesar Hicks
Mathematics
4 June, 20:57
Algebra 2
Solve: f (x) = x^2-9
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Ronin Page
4 June, 21:06
0
This problem is a difference of squares. So to solve this you want to factor it out so you get two numbers that multiple to - 9 and add to 0. That would be - 3 and 3
f (x) = (x-3) (x+3)
So your solution when you set f (x) to 0 would be - 3 and 3.
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