Algebra Question with answer Practice Question and Answer

Q:

यदि x+y =3 तथा $${1\over x}+{1\over y}= -{3\over 10}$$  है, तो (x2+y2)  का मान क्या है?

466 0

  • 1
    29
    Correct
    Wrong
  • 2
    28
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    34
    Correct
    Wrong
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Answer : 1. "29"

Q:

निम्नलिखित व्यंजक को सरल कीजिए।

$${\left({375+125} \right)^2-\left({125-375} \right)^2}\over 375×375-125×125$$

453 0

  • 1
    $$15\over 8$$
    Correct
    Wrong
  • 2
    $$3\over 2$$
    Correct
    Wrong
  • 3
    $$27\over 28$$
    Correct
    Wrong
  • 4
    $$3\over 4$$
    Correct
    Wrong
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Answer : 2. "$$3\over 2$$"

Q:

यदि x4+y4+x2y2=21 तथा x2+y2-xy=7 है, तो $${x\over y}+{y\over x}$$ का मान क्या है?

412 0

  • 1
    $$15\over 8$$
    Correct
    Wrong
  • 2
    $$3\over 2$$
    Correct
    Wrong
  • 3
    $$27\over 28$$
    Correct
    Wrong
  • 4
    $$3\over 4$$
    Correct
    Wrong
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Answer : 2. "$$3\over 2$$"

Q:

यदि 6x2+13x+7=0, के मूल α और β हैं, तब α2, β2 मूल वाला समीकरण क्या होगा?

309 0

  • 1
    36x2 − 87x + 49 = 0
    Correct
    Wrong
  • 2
    36x− 85x − 49 = 0
    Correct
    Wrong
  • 3
    36x− 85x + 49 = 0
    Correct
    Wrong
  • 4
    36x+ 87x − 49 = 0
    Correct
    Wrong
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Answer : 3. "36x− 85x + 49 = 0"

Q:

यदि $$x^4+{16\over x^4}=15617, x>0$$  है तो $$x+{2\over x}$$ का मान ज्ञात कीजिए 

429 0

  • 1
    $$ \sqrt {121} $$
    Correct
    Wrong
  • 2
    $$ \sqrt {127} $$
    Correct
    Wrong
  • 3
    $$ \sqrt {129} $$
    Correct
    Wrong
  • 4
    $$ \sqrt {123} $$
    Correct
    Wrong
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Answer : 3. "$$ \sqrt {129} $$"

Q:

a2+b2+c2-2ab-2bc+2ca का मान क्या है?

410 0

  • 1
    (2a + b + c)2
    Correct
    Wrong
  • 2

    (a − b + c)2

    Correct
    Wrong
  • 3

    (a − b − 2c)2

    Correct
    Wrong
  • 4

    (a + 2b − c)2

    Correct
    Wrong
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Answer : 2. "

(a − b + c)2

"

Q:

यदि $$a+{1\over a}=5$$, तो $$a^3+{1\over a^3}$$ का मान क्या है

338 0

  • 1
    110
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    105
    Correct
    Wrong
  • 4
    -10
    Correct
    Wrong
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Answer : 1. "110 "

Q:

यदि a=26 and b=22, है, तो $${{a^3-b^3}\over {a^2-b^2}}-{3ab\over a+b}$$  का मान है:

519 0

  • 1
    $$11\over 13$$
    Correct
    Wrong
  • 2
    $$1\over 3$$
    Correct
    Wrong
  • 3
    $$5\over 3$$
    Correct
    Wrong
  • 4
    $$13\over 11$$
    Correct
    Wrong
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Answer : 2. "$$1\over 3$$"

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