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kaiteDID

  • 3 years ago

Solve this sentence. | 2x + 1 | = 10 x = or x =

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  1. myininaya
    • 3 years ago
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    |f(x)|=a where a>0 => f(x)=a or f(x)=-a

  2. myininaya
    • 3 years ago
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    |f(x)|=a where a<0 => no solution

  3. myininaya
    • 3 years ago
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    |f(x)|=a where a=0 => f(x)=0

  4. myininaya
    • 3 years ago
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    So which one do you have here? 1st, 2nd, or 3rd?

  5. kaiteDID
    • 3 years ago
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    1st

  6. myininaya
    • 3 years ago
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    Right since 10>0 :) so we have |f(x)|=10 which implies f(x)=10 or f(x)=-10

  7. myininaya
    • 3 years ago
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    2x+1=10 or 2x+1=-10 All you have to do is solve both of these equations for x.

  8. kaiteDID
    • 3 years ago
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    okay i get it thank you so much

  9. myininaya
    • 3 years ago
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    np :)

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