SOLUTION: How can I multiply this? (x + 3)(x - 3)

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Question 462118: How can I multiply this?
(x + 3)(x - 3)
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


There are two ways to go about this.

You can just use FOIL in the normal way. First, Outside, Inside, Last, then sum and collect like terms, or...

...you can just recognize that this is the product of two binomial conjugates so the product is the difference of two squares, thus:



John

My calculator said it, I believe it, that settles it
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