Algebra Practice Question and Answer

Q:

рдпрджрд┐┬а$$ {a={1+x\over 2-x}}$$,┬ард╣реИ,┬арддреЛ┬а$$ {1\over {a+1}}+{2a+1\over{a^{2}-1}}$$┬ардХрд┐рд╕рдХреЗ рдмрд░рд╛рдмрд░ рд╣реЛрдЧрд╛?

650 0

  • 1
    $$ {(1+x)(2+x)\over {2x-1}}$$
    Correct
    Wrong
  • 2
    $$ {(1-x)(2-x)\over {x-1}}$$
    Correct
    Wrong
  • 3
    $$ {(1+x)(2-x)\over {2x-1}}$$
    Correct
    Wrong
  • 4
    $$ {(1+x)(2-x)\over {2x+1}}$$
    Correct
    Wrong
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Answer : 3. "$$ {(1+x)(2-x)\over {2x-1}}$$"

Q:

рдпрджрд┐┬а$$ {x+{1\over x}=7}$$ ┬ард╣реИ рддреЛ┬а$$ {x^{2}+{1\over {x^{2}}}=?}$$┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛?

643 0

  • 1
    47
    Correct
    Wrong
  • 2
    45
    Correct
    Wrong
  • 3
    49
    Correct
    Wrong
  • 4
    51
    Correct
    Wrong
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Answer : 1. "47"

Q:

рдпрджрд┐┬а$${\sqrt{7-2}\over\sqrt{7+2}}=a\sqrt{7}+b$$,рд╣реИ рддреЛ┬аa рдХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХрд░реЗ┬а

639 0

  • 1
    $${4\over3}$$
    Correct
    Wrong
  • 2
    $${-4тИЪ7\over3}$$
    Correct
    Wrong
  • 3
    $${11\over2}$$
    Correct
    Wrong
  • 4
    $$-{4\over3}$$
    Correct
    Wrong
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Answer : 4. " $$-{4\over3}$$"

Q:

рдпрджрд┐┬аa┬атЙа┬аb┬ард╣реИ,┬арддреЛ рдирд┐рдореНрди рдореЗ рд╕реЗ рдХреЛрдирд╕рд╛ рдХрдерди рд╕рддреНрдп рд╣реИ┬а?

621 0

  • 1
    $${a+b\over 2}= \sqrt{ab} $$
    Correct
    Wrong
  • 2
    $${a+b\over 2}> \sqrt{ab} $$
    Correct
    Wrong
  • 3
    $${a+b\over 2}< \sqrt{ab} $$
    Correct
    Wrong
  • 4
    рдЙрдкрд░реЛрдХреНрдд рд╕рднреА
    Correct
    Wrong
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Answer : 2. "$${a+b\over 2}> \sqrt{ab} $$"

Q:

рдпрджрд┐ p3 тАУ q3 = (p-q)[(p-q)2+xpq)] ┬ард╣реЛ, рддреЛ x рдХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдпреЗ

587 0

  • 1
    1
    Correct
    Wrong
  • 2
    -1
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 3. "3"

Q:

рдпрджрд┐┬а$$n+{2\over 3}n+{1\over2}n+{1\over7}n=97$$┬ард╣реИ,┬арддреЛ┬аn┬ардХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХрд░реЗ┬а?

551 0

  • 1
    44
    Correct
    Wrong
  • 2
    46
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    42
    Correct
    Wrong
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Answer : 4. "42 "

Q:

рдпрджрд┐┬а$$x+{1\over x}=c{1\over c}$$ ┬арддреЛ x рдХрд╛ рдорд╛рди рдмрддрд╛рдЗрдП ?

524 0

  • 1
    c, 1\c
    Correct
    Wrong
  • 2
    c, c2
    Correct
    Wrong
  • 3
    c, 2c
    Correct
    Wrong
  • 4
    0, 1
    Correct
    Wrong
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Answer : 1. "c, 1\c "

Q:

x4+64 рдХрд╛ рд╕рдореНрдкреВрд░реНрдг рдЧреБрдгрдирдЦрдВрдб рдХрд░реЗрдВ ?

522 0

  • 1
    $$\left(x^2+8 \right)^2 \ $$
    Correct
    Wrong
  • 2
    $$\left(x^2+8 \right) \ (x^2-8)$$
    Correct
    Wrong
  • 3
    $$\left(x^2-4x+8 \right) \ (x^2-4x-8)$$
    Correct
    Wrong
  • 4
    $$\left(x^2+4x+8 \right) \ (x^2-4x+8)$$
    Correct
    Wrong
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Answer : 4. "$$\left(x^2+4x+8 \right) \ (x^2-4x+8)$$"

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