anonymous
  • anonymous
Let f(x)=(x+2/3)squared. find all values for the variable x for which f(x)=0.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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bahrom7893
  • bahrom7893
x = -2
bahrom7893
  • bahrom7893
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.
anonymous
  • anonymous
x = -2/3

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bahrom7893
  • bahrom7893
JJANELLE WRONG!
bahrom7893
  • bahrom7893
plug it in and see for yourself.
anonymous
  • anonymous
\[f(x)=(x+2/3)^{2}\] is the equation to which we are referring, correct? If so, f(-2)=-16/9
bahrom7893
  • bahrom7893
okay, let me prove this: \[f(-2) = ((-2+2)/3)^2 = (0/3)^2=0\]
bahrom7893
  • bahrom7893
oh wait, I know what you mean!
bahrom7893
  • bahrom7893
\[-2^2 + (2/3)^2\] Oh, I am sorry, I was thinking about a completely different problem
bahrom7893
  • bahrom7893
You are right! But it still depends on the question, he didn't isolate (2/3) by putting it in parenthesis!
bahrom7893
  • bahrom7893
Please guys, use parenthesis! And jjanelle congrats on becoming a lifesaver!
anonymous
  • anonymous
Thanks to the order of operations parentheses aren't needed in this problem. PEMDAS - Parentheses, exponents, multiplication, division, addition, and subtraction
bahrom7893
  • bahrom7893
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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