anonymous
  • anonymous
Which shows 51^2 - 49^2 being evaluated using the difference of squares method?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
512 - 492 = 2601 - 2401 = 200 512 - 492 = (51 + 49)(51 - 49) = (100)(2) = 200 512 - 492 = (51 - 49)2 = 22 = 4 512 - 492 = (2601 + 2401)(2601 - 2401) = 1,000,400
anonymous
  • anonymous
C. because difference of squares is like factoring. Taking two numbers and then squaring or factoring them (depending if it's a quadratic equation or not).
anonymous
  • anonymous
Thanks!

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anonymous
  • anonymous
Can you help me with one more?
anonymous
  • anonymous
Ya sure!
anonymous
  • anonymous
Which of the following best describes the graph of f(x) = x2 - 3x - 10?
anonymous
  • anonymous
Minimum at (1.5, -12.25) with intercepts at (5, 0) and (-2, 0) Minimum at (-1.5, -12.25) with intercepts at (-5, 0) and (2, 0) Minimum at (-3.5, -2.25) with intercepts at (-5, 0) and (-2, 0) Minimum at (3.5, -2.25) with intercepts at (5, 0) and (2, 0)
jdoe0001
  • jdoe0001
easier if you post anew, more eyes
anonymous
  • anonymous
That would be A. Look at www.desmos.com the calculator will be useful. Just type the equation and then see what points land on that equation.
anonymous
  • anonymous
Thanks :D I wish I could give you two medals Dx
anonymous
  • anonymous
Lol you can give me a medal for this question I answered for someone else: http://openstudy.com/study#/updates/55c29d5ae4b08de2ded201be
anonymous
  • anonymous
And you're welcome! :D

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