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anonymous

  • 5 years ago

Let f(x)=(x+2/3)squared. find all values for the variable x for which f(x)=0.

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  1. bahrom7893
    • 5 years ago
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    x = -2

  2. bahrom7893
    • 5 years ago
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    because the value of that fraction is equal to zero only when the numerator, or x plus two is equal to zero. x+2 = 0, x= -2 click on Become a fan if I helped. Thanks.

  3. anonymous
    • 5 years ago
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    x = -2/3

  4. bahrom7893
    • 5 years ago
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    JJANELLE WRONG!

  5. bahrom7893
    • 5 years ago
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    plug it in and see for yourself.

  6. anonymous
    • 5 years ago
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    \[f(x)=(x+2/3)^{2}\] is the equation to which we are referring, correct? If so, f(-2)=-16/9

  7. bahrom7893
    • 5 years ago
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    okay, let me prove this: \[f(-2) = ((-2+2)/3)^2 = (0/3)^2=0\]

  8. bahrom7893
    • 5 years ago
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    oh wait, I know what you mean!

  9. bahrom7893
    • 5 years ago
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    \[-2^2 + (2/3)^2\] Oh, I am sorry, I was thinking about a completely different problem

  10. bahrom7893
    • 5 years ago
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    You are right! But it still depends on the question, he didn't isolate (2/3) by putting it in parenthesis!

  11. bahrom7893
    • 5 years ago
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    Please guys, use parenthesis! And jjanelle congrats on becoming a lifesaver!

  12. anonymous
    • 5 years ago
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    Thanks to the order of operations parentheses aren't needed in this problem. PEMDAS - Parentheses, exponents, multiplication, division, addition, and subtraction

  13. bahrom7893
    • 5 years ago
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    I don't know, I always use em, especially dealing with kids on yahoo answers. I mean having them can't hurt..

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