What's the different between "different from" and "different than"? Thanks

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Xarmanla is correct;

http://www.grammarerrors.com/grammar/different-from-than/

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Different from is almost always acceptable. Different than should be used only before a clause. This may be different than you had expected.

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The debate over different than/from rages in several internet blogs. I personally distinguish between the two.

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different from" and "different than can be used interchangeably

Spanish is different from Italian

Math is different than English

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Can you give an example of using "different than"?
I can't think of one.