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Answer : 4. "$$ {10B^2=49CA}$$"

Q:

.$$ ({2+\sqrt{5}})$$┬ардФрд░ ┬а$$ ({2-\sqrt{5}})$$┬ардореВрд▓реЛрдВ рд╡рд╛рд▓рд╛ рджреНрд╡рд┐рдШрд╛рдд рд╕рдореАрдХрд░рдг рд╣реИред

901 0

  • 1
    $$ {x^{2}-3x-4=0}$$
    Correct
    Wrong
  • 2
    $$ {x^{2}+3x-4=0}$$
    Correct
    Wrong
  • 3
    $$ {x^{2}-3x+4=0}$$
    Correct
    Wrong
  • 4
    $$ {x^{2}+3x+4=0}$$
    Correct
    Wrong
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Answer : 1. "$$ {x^{2}-3x-4=0}$$"

Q:

┬ардирд┐рдореНрдирд▓рд┐рдЦрд┐рдд рдкреНрд░рд╢реНрди рдХрд╛ рд╕рд╣реА рдорд╛рди рдЬреНрдЮрд╛рдд рдХрд░реЗрдВ:

$$ 3{1\over2} ├Ч 3 {1\over 7}+ 5{3\over4}├╖{46\over3}=?$$

872 0

  • 1
    $$ 13{2\over5}$$
    Correct
    Wrong
  • 2
    $$ 11{3\over8}$$
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    рдЗрдирдореЗрдВ рд╕реЗ рдХреЛрдИ рдирд╣реАрдВ
    Correct
    Wrong
  • 5
    11
    Correct
    Wrong
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Answer : 2. "$$ 11{3\over8}$$"

Q:

рдпрджрд┐┬а$$ {x^2-12x+33=0}$$,┬ард╣реИ,рддреЛ┬а$${(x-4)^2+[{1\over({x-4})^2}}]$$┬ардХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реИ?

855 0

  • 1
    16
    Correct
    Wrong
  • 2
    18
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    14
    Correct
    Wrong
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Answer : 4. "14"

Q:

$$ {ab-a-b+1}$$┬ардХрд╛ рдЧреБрдгрдирдЦрдгреНрдб рд╣реИред

828 0

  • 1
    (a-1)(b-1)
    Correct
    Wrong
  • 2
    (a+1)(b-1)
    Correct
    Wrong
  • 3
    (a-1)(b+1)
    Correct
    Wrong
  • 4
    (a+b)(b-1)
    Correct
    Wrong
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Answer : 1. "(a-1)(b-1)"

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