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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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    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.

  2. anonymous
    • one year ago
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    so divide -3 then square it?

  3. anonymous
    • one year ago
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    Oops, I forgot to write that you should divide -3 by 2.

  4. anonymous
    • one year ago
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    which is 1.5?

  5. anonymous
    • one year ago
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    Keep it in fraction, since your choices are in fraction.

  6. anonymous
    • one year ago
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    sqrt 1 1/2

  7. anonymous
    • one year ago
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    Why is it there a square root? -3 divided by 2 is -3/2.

  8. anonymous
    • one year ago
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    Then square it. \[\left( -\frac{ 3 }{ 2 } \right)^2\]

  9. anonymous
    • one year ago
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    divide by 2 then find square root?

  10. anonymous
    • one year ago
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    ohh

  11. anonymous
    • one year ago
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    Not the square root, but you square it. ^2

  12. anonymous
    • one year ago
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    which would just be 1 1/2

  13. anonymous
    • one year ago
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    \[-\frac{ 3 }{ 2 }\times-\frac{ 3 }{ 2 }=????\]

  14. anonymous
    • one year ago
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    What is -3 times -3 (numerator)? What is 2 time 2 (denominator)?

  15. anonymous
    • one year ago
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    9/4

  16. anonymous
    • one year ago
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    = 2 1/4

  17. anonymous
    • one year ago
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    Yes. :)

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