anonymous
  • anonymous
Help please!!!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Given the following perfect square trinomial, fill in the missing term. x2 − 16x + ____ Numerical Answers Expected! Answer for Blank 1:
Michele_Laino
  • Michele_Laino
hint: you have to search for a number \(k\) such that, the subsequent condition holds: \(2k=-8\)
Michele_Laino
  • Michele_Laino
it is the first step

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anonymous
  • anonymous
okay
Michele_Laino
  • Michele_Laino
so, from my equation above, we have to compute this: \[\huge k = - \frac{8}{2} = ...?\]
anonymous
  • anonymous
\[x^2-16 x+64=(x-8)^2 \]
anonymous
  • anonymous
I am lost, I do not know how to solve that.
anonymous
  • anonymous
the result for your equation would be -4 right? @Michele_Laino
Michele_Laino
  • Michele_Laino
oops.. you are right @robtobey I'm sorry @FEARLESS_JOCEY , I have made an error, the right formula, is: \[\huge 2k = - 16 \Rightarrow k = - \frac{{16}}{2} = ...?\]
anonymous
  • anonymous
-8 ?
Michele_Laino
  • Michele_Laino
that's right! Now, the missing number is: \(k^2=(-8)^2=...?\)
anonymous
  • anonymous
It is always 1/2 of the cooefficient of x, squared. I memorized the above from first year algebra years ago.
anonymous
  • anonymous
I mean 64?
Michele_Laino
  • Michele_Laino
Thta's right!! :) @FEARLESS_JOCEY thanks!! :) for your reply @robtobey
anonymous
  • anonymous
THanks to the both of you, both of you were very helpful!
Michele_Laino
  • Michele_Laino
:)
anonymous
  • anonymous
Your welcome.

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