SOLUTION: How do you factorise equations like: x^2 -9

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Question 782829: How do you factorise equations like: x^2 -9
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Use the difference of squares rule a^2 - b^2 = (a-b)(a+b) to get

x^2 -9 = x^2 - 3^2 = (x-3)(x+3)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How do you factorise equations like: x^2 -9
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That's not an equation, there's no equal sign.