Practice Question and Answer

Q:

рдпрджрд┐┬аx тАУ y + z = 15, xyz = -216┬ардФрд░┬аxz тАУ xy тАУ yz = 18┬ард╣реИ рддреЛ┬а$$ {x^3}-{y^3}+{z^3}=$$┬ардЗрд╕рдХрд╛ рдорд╛рди рд╣реЛрдЧрд╛

1381 0

  • 1
    2613
    Correct
    Wrong
  • 2
    2813
    Correct
    Wrong
  • 3
    3013
    Correct
    Wrong
  • 4
    3213
    Correct
    Wrong
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Answer : 4. "3213"

Q:

рдпрджрд┐┬а0.4 m + 0.8 n = 2.2┬ардФрд░┬а0.8 m + 0.4 n = 1.4,┬ард╣реЛ,┬арддреЛ┬а$$ {m^2}+{n^2}$$рдХрд╛ рдорд╛рди рдХреНтАНрдпрд╛ рд╣рд╛реЗрдЧрд╛?

1451 0

  • 1
    8.5
    Correct
    Wrong
  • 2
    6.5
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    9
    Correct
    Wrong
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Answer : 2. "6.5"

Q:

рдпрджрд┐┬а$$ {x^2} -4x-1 $$┬а┬ард╣реИ рддреЛ рдЗрд╕рдХрд╛┬а$$ {{x^6} -{x^4}+{x^2}-1}\over {x^3}$$ ┬ардорд╛рди рд╣реЛрдЧрд╛

1271 0

  • 1
    72
    Correct
    Wrong
  • 2
    76
    Correct
    Wrong
  • 3
    80
    Correct
    Wrong
  • 4
    84
    Correct
    Wrong
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  • Workspace

Answer : 1. "72"

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