anonymous
  • anonymous
x^2 - 7x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
under what directions
anonymous
  • anonymous
What number must be added to the polynomial to complete the square? If necessary, use the slash mark ( / ) as a fraction bar and leave your answer in the form of an improper fraction.
anonymous
  • anonymous
square 7/2 = 49/4

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anonymous
  • anonymous
how you do that is you divide b(7) by 2 and then square the result and add it to both sides
anonymous
  • anonymous
yea i had got tht i tyype it in the calculator and got tht answer to
anonymous
  • anonymous
same thing you've been doing with others
anonymous
  • anonymous
whts tht
anonymous
  • anonymous
don't let the fractions scare you...you got it!
anonymous
  • anonymous
Taking half (dividing by 2) then squaring that result to add to both sides
anonymous
  • anonymous
hold up im confused
anonymous
  • anonymous
use the a b/c key on your calculator.
anonymous
  • anonymous
is it 1/4 or 1
radar
  • radar
\[x ^{2}-7x+(-7/2)^{2}=0+(-7/2)^{2}\] \[x ^{2}-7x+49/4=49/4\] \[(x-7/2)^{2}\] The number to be added is as you can see is 49/4. The last line is to show what the root would look like.

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