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anonymous

  • 5 years ago

How to simplify (2a+14)(1/3a+21)?

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  1. anonymous
    • 5 years ago
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    OMGIrene, is that 1/ (3a) ?

  2. anonymous
    • 5 years ago
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    That is 1 over 3a + 21

  3. dumbcow
    • 5 years ago
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    factor :)

  4. L
    • 5 years ago
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    (2a+14) / (3a+21) -> [2 (a+7)] / [3 (a+7)] -> 2/3 That is the solution. *

  5. anonymous
    • 5 years ago
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    I was correct! Haha. Thank you everyone!

  6. anonymous
    • 5 years ago
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    (2a+14) / (3a+21) = [2 (a+7)] / [3 (a+7)] = 2/3, except a=-7

  7. L
    • 5 years ago
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    Yes that s true. Except a=-7

  8. dumbcow
    • 5 years ago
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    no this is not a situation of an asymptote at a=-7 the limit as a->-7 is 2/3 Notice at a=-7 the function is 0/0 which is indeterminate not undefined L'Hopitals rule says differentiate leaving 2/3 as limit therefore function equals 2/3 for all values of a because (a+7) cancels out you generally dont need to worry about the (a+7) in the denominator

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