Questions · Page 2 of 2

M.C.Q

MCQ 511 Mark
If both $x-2$ and $x-\frac{1}{2}$ are factors of $p x^2+5 x+r$, then
  • p = r
  • B
    p + r = 0
  • C
    2p + r = 0
  • D
    p + 2r = 0
Answer
Correct option: A.
p = r
a
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MCQ 521 Mark
If $(3 x-1)^7=a_7 x^7+a_6 x^6+a_5 x^5+\cdots+a_1 x+a_0$, then $a_7+a_6+a_5+\cdots+a_1+a_0=$
  • A
    $0$
  • B
    1
  • 128
  • D
    64
Answer
Correct option: C.
128
c
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MCQ 531 Mark
If $x^2+x+1$ is a factor of the polynomial $3 x^3+8 x^2+8 x+3+5 k$, then the value of $k$ is
  • A
    $0$
  • $2 / 5$
  • C
    $5 / 2$
  • D
    -1
Answer
Correct option: B.
$2 / 5$
b
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MCQ 541 Mark
$(x+1)$ is a factor of $x^n+1$ only if
  • $n$ is an odd integer
  • B
    $n$ is an even integer
  • C
    $n$ is a negative integer
  • D
    $n$ is a positive integer
Answer
Correct option: A.
$n$ is an odd integer
a
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MCQ 551 Mark
If $(x-1)$ is a factor of polynomial $f(x)$ but not of $g(x)$, then it must be a factor of
  • f(x) g(x)
  • B
    -f(x)+g(x)
  • C
    f(x)-g(x)
  • D
    $\{f(x)+g(x)\} g(x)$
Answer
Correct option: A.
f(x) g(x)
a
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MCQ 561 Mark
One factor of $x^4+x^2-20$ is $x^2+5$. The other factor is
  • $x^2-4$
  • B
    $x-4$
  • C
    $x^2-5$
  • D
    x+4
Answer
Correct option: A.
$x^2-4$
a
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MCQ 571 Mark
When $x^3-2 x^2+a x-b$ is divided by $x^2-2 x-3$, the remainder is $x-6$. The values of $a$ and $b$ are respectively
  • A
    -2,-6
  • B
    2 and -6
  • -2 and 6
  • D
    2 and 6
Answer
Correct option: C.
-2 and 6
c
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MCQ 581 Mark
Let $f(x)$ be a polynomial such that $f\left(-\frac{1}{2}\right)=0$, then a factor of $f(x)$ is
  • A
    $2 x-1$
  • $2 x+1$
  • C
    $x-1$
  • D
    $x+1$
Answer
Correct option: B.
$2 x+1$
b
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MCQ 591 Mark
If $x+2$ and $x-1$ are the factors of $x^3+10 x^2+m x+n$, then the values of $m$ and $n$ are respectively
  • A
    5 and -3
  • B
    17 and -8
  • 7 and -18
  • D
    23 and -19
Answer
Correct option: C.
7 and -18
c
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MCQ 601 Mark
The value of $k$ for which $x-1$ is a factor of $4 x^3+3 x^2-4 x+k$, is
  • A
    3
  • B
    1
  • C
    -2
  • -3
Answer
Correct option: D.
-3
d
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MCQ 661 Mark
If $x^{140}+2 x^{151}+k$ is divisible by $x+1$, then the value of $k$ is
  • 1
  • B
    -3
  • C
    2
  • D
    -2
Answer
Correct option: A.
1
a
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MCQ 671 Mark
If $x-a$ is a factor of $x^3-3 x^2 a+2 a^2 x+b$, then the value of $b$ is
  • $0$
  • B
    2
  • C
    1
  • D
    3
Answer
Correct option: A.
$0$
a
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MCQ 711 Mark
$x+1$ is a factor of the polynomial
  • A
    $x^3+x^2-x+1$
  • $x^3+x^2+x+1$
  • C
    $x^4+x^3+x^2+1$
  • D
    $x^4+3 x^3+3 x^2+x+1$
Answer
Correct option: B.
$x^3+x^2+x+1$
b
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MCQ 721 Mark
If $f(x)=x^2-2 \sqrt{2} x+1$, then $f(2 \sqrt{2})$ is equal to
  • A
    $0$
  • 1
  • C
    $4 \sqrt{2}$
  • D
    $8 \sqrt{2}+1$
Answer
Correct option: B.
1
b
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MCQ 731 Mark
One of the zeros of the polynomial $f(x)=2 x^2+7 x-4$ is
  • A
    2
  • $\frac{1}{2}$
  • C
    $-\frac{1}{2}$
  • D
    -2
Answer
Correct option: B.
$\frac{1}{2}$
b
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MCQ 741 Mark
Zero of the polynomial $f(x)=3 x+7$ is
  • A
    $\frac{7}{3}$
  • B
    $\frac{-3}{7}$
  • $-\frac{7}{3}$
  • D
    $-7$
Answer
Correct option: C.
$-\frac{7}{3}$
c
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MCQ 761 Mark
Zero of the zero polynomial is
  • A
    $0$
  • B
    1
  • any natural number
  • D
    not defined
Answer
Correct option: C.
any natural number
c
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MCQ 781 Mark
Degree of the zero polynomial is
  • A
    $0$
  • B
    1
  • C
    any natural number
  • not defined
Answer
Correct option: D.
not defined
d
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MCQ 801 Mark
Which one of the following is a polynomial?
  • A
    $\frac{x^2}{2}-\frac{2}{x^2}$
  • B
    $\sqrt{2 x}-1$
  • $x^2+\frac{3 x^{3 / 2}}{\sqrt{x}}$
  • D
    $\frac{x-1}{x+1}$
Answer
Correct option: C.
$x^2+\frac{3 x^{3 / 2}}{\sqrt{x}}$
c
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