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anonymous

  • one year ago

Which shows 51^2 - 49^2 being evaluated using the difference of squares method?

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  1. anonymous
    • one year ago
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    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

  2. anonymous
    • one year ago
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    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).

  3. anonymous
    • one year ago
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    Thanks!

  4. anonymous
    • one year ago
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    Can you help me with one more?

  5. anonymous
    • one year ago
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    Ya sure!

  6. anonymous
    • one year ago
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    Which of the following best describes the graph of f(x) = x2 - 3x - 10?

  7. anonymous
    • one year ago
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    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)

  8. jdoe0001
    • one year ago
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    easier if you post anew, more eyes

  9. anonymous
    • one year ago
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    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.

  10. anonymous
    • one year ago
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    Thanks :D I wish I could give you two medals Dx

  11. anonymous
    • one year ago
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    Lol you can give me a medal for this question I answered for someone else: http://openstudy.com/study#/updates/55c29d5ae4b08de2ded201be

  12. anonymous
    • one year ago
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    And you're welcome! :D

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