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anonymous

  • 5 years ago

Is this a trick question? Simplify: (7x-9)(7x+9)

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  1. anonymous
    • 5 years ago
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    It already looks simplified.

  2. anonymous
    • 5 years ago
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    combine like terms

  3. anonymous
    • 5 years ago
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    Yes, but that takes it from factored form into a more complex form, and defeats the purpose of simplifying, right?

  4. anonymous
    • 5 years ago
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    49x^2 - 81

  5. anonymous
    • 5 years ago
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    My teacher is evil, so I have to check stuff like this that should be simple...

  6. anonymous
    • 5 years ago
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    what grade are you in?

  7. anonymous
    • 5 years ago
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    It's college algebra. My teacher is head of the Math Department for the college, so he throws trick questions at us very often.

  8. anonymous
    • 5 years ago
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    I hate algebra

  9. anonymous
    • 5 years ago
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    The full instructions are: Simplify Completely From my other problems, I got the long form of problems and had to convert them into factored form. This is a factored form already, so it seems like a trick to get me to write out the long form.

  10. anonymous
    • 5 years ago
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    I would just keep it

  11. anonymous
    • 5 years ago
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    how simplify could it be (\[(7x) ^{2}-9^{2}\]

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spraguer (Moderator)
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