anonymous
  • anonymous
Which of the following constants can be added to x^2 - 3x to form a perfect square trinomial? 1 1/2 2 1/4 4 1/2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Like what I've told earlier, divide the coefficient of x (in this case, it is -3), then once you get the quotient, square it.
anonymous
  • anonymous
so divide -3 then square it?
anonymous
  • anonymous
Oops, I forgot to write that you should divide -3 by 2.

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anonymous
  • anonymous
which is 1.5?
anonymous
  • anonymous
Keep it in fraction, since your choices are in fraction.
anonymous
  • anonymous
sqrt 1 1/2
anonymous
  • anonymous
Why is it there a square root? -3 divided by 2 is -3/2.
anonymous
  • anonymous
Then square it. \[\left( -\frac{ 3 }{ 2 } \right)^2\]
anonymous
  • anonymous
divide by 2 then find square root?
anonymous
  • anonymous
ohh
anonymous
  • anonymous
Not the square root, but you square it. ^2
anonymous
  • anonymous
which would just be 1 1/2
anonymous
  • anonymous
\[-\frac{ 3 }{ 2 }\times-\frac{ 3 }{ 2 }=????\]
anonymous
  • anonymous
What is -3 times -3 (numerator)? What is 2 time 2 (denominator)?
anonymous
  • anonymous
9/4
anonymous
  • anonymous
= 2 1/4
anonymous
  • anonymous
Yes. :)

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