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If $straight x open parentheses 3 minus 2 over straight x close parentheses space equals space 3 over straight x comma space$ then the value of $straight x squared plus 1 over straight x squared$ will be

$3 1 over 9$
$3 2 over 9$
$2 1 over 9$
$2 1 over 9$

104 Views

42.

If $fraction numerator straight a over denominator straight q minus straight r end fraction equals space fraction numerator straight b over denominator straight r minus straight p end fraction equals fraction numerator straight c over denominator straight p minus straight q end fraction$ , then the value of pa + qb + rc is

122 Views

43.

The simplest value of $fraction numerator 3 square root of 8 minus 2 square root of 12 plus square root of 20 over denominator 3 square root of 18 minus 2 square root of 27 plus square root of 45 end fraction space$ is

$3 over 2$
$2 over 3$
$1 third$
$1 third$

101 Views

44.
If $open parentheses straight a plus 1 over straight a close parentheses squared space equals space 3$ , then the value of $straight a cubed plus 1 over straight a cubed$ is

0

$3 open parentheses straight a plus 1 over straight a close parentheses$
$3 open parentheses straight a squared plus 1 over straight a squared close parentheses$
$3 open parentheses straight a squared plus 1 over straight a squared close parentheses$

open parentheses straight a plus 1 over straight a close parentheses squared equals space space 3 rightwards double arrow space straight a plus 1 over straight a space equals space square root of 3

straight x plus 1 over straight x space equals space straight a comma space space then space straight x cubed plus 1 over straight x cubed space equals left parenthesis straight a right parenthesis cubed minus 3 straight a

therefore space straight a cubed plus 1 over straight a cubed space equals space left parenthesis square root of 3 right parenthesis cubed space minus space 3 square root of 3 space equals space 0

113 Views

45.

If $fraction numerator straight a squared plus straight b squared over denominator straight c squared end fraction space equals space fraction numerator straight b squared plus straight c squared over denominator straight a squared end fraction space equals fraction numerator straight c squared plus straight a squared over denominator straight b squared end fraction space equals space 1 over straight k comma space left parenthesis straight k not equal to 0 right parenthesis space then space straight k space equals space ?$

155 Views

46.

If $2 straight x plus fraction numerator 2 over denominator 9 straight x end fraction space equals 4 comma$ then the value of $27 straight x cubed plus fraction numerator 1 over denominator 27 straight x cubed end fraction$

90 Views

47.

If $straight x squared plus 1 over straight x squared equals space space 2 comma space$ then the value of $straight x minus 1 over straight x$ is

-2
0
1
1

93 Views

48.

If $pq left parenthesis straight p plus straight q right parenthesis space equals space 1 comma space$ then the value of $fraction numerator 1 over denominator straight p cubed straight q cubed end fraction minus straight p cubed minus straight q cubed$ is equal to

106 Views

49.

If $straight x equals space square root of 2 plus 1 comma$ then the value of $straight x to the power of 4 minus 1 over straight x to the power of 4$ is

$8 square root of 2$
$18 square root of 2$
$6 square root of 2$
$6 square root of 2$

91 Views

50.

If $9 straight x squared plus 16 straight y squared space equals space 60$ and $3 straight x plus 4 straight y space equals space 6 comma$ then the value of xy is

-1
1
-2
-2

77 Views

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Previous Year Papers

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Multiple Choice Questions

44. If , then the value of is 0