Algebra Practice Question and Answer

Q:

If m = – 4, n = – 2, then the value of m– 3m+ 3m + 3n + 3n2 + n3 is

884 0

  • 1
    – 126
    Correct
    Wrong
  • 2
    124
    Correct
    Wrong
  • 3
    – 124
    Correct
    Wrong
  • 4
    126
    Correct
    Wrong
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Answer : 1. "– 126 "

Q:

If P = 99, then the value of P(P2+3P+3) is

884 0

  • 1
    999
    Correct
    Wrong
  • 2
    999999
    Correct
    Wrong
  • 3
    99999
    Correct
    Wrong
  • 4
    99
    Correct
    Wrong
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Answer : 2. "999999"

Q:

What is the simplified form the expression (1+x)(1+x2)(1+x4)(1+x8)(1-x)?

881 0

  • 1

    1-x40

    Correct
    Wrong
  • 2

    1-x32

    Correct
    Wrong
  • 3

    1-x16

    Correct
    Wrong
  • 4

    1-x42

    Correct
    Wrong
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Answer : 3. "

1-x16

"

Q:

Directions: In each of these questions, two equations (i) and (ii) are given, you have to solve both the equations and give answer accordingly.

(i) 21x² + 10x + 1 = 0
 (ii) 24y²+ 26y + 5 = 0

877 0

  • 1
    x ≤ y
    Correct
    Wrong
  • 2
    x ≥ y
    Correct
    Wrong
  • 3
    x > y
    Correct
    Wrong
  • 4
    x < y
    Correct
    Wrong
  • 5
    x = y or no relation can be established between x & y.
    Correct
    Wrong
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Answer : 5. "x = y or no relation can be established between x & y."

Q:

 if $$x^4+{16\over x^4}=15617, x>0$$ then find the value of $$x+{2\over x}$$

873 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:

if 2x + 3y = 17 and 2x+2 – 3y+1 = 5, then :

869 0

  • 1
    x = 1, y = 3
    Correct
    Wrong
  • 2
    x = 3, y = 3
    Correct
    Wrong
  • 3
    x = 3, y = 2
    Correct
    Wrong
  • 4
    x = 1, y = 2
    Correct
    Wrong
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Answer : 3. "x = 3, y = 2"

Q:

if x+y =3 and $${1\over x}+{1\over y}= -{3\over 10}$$ then the value of (x2+y2) is :

864 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:

Simplify the following expression.

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

864 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. "$$3\over 2$$"

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