If `(x^2-1)/x=4` , then `(x^6-1)/(x^3)` is (a) 63 (b) 66 (c) 75 (d) 76

If x+(1)/(x)=3, then x^(6)+(1)/(x^(6))=927(b)414 (c) 364 (d) 322

If x^(3)=(1)/(x^(3))=14, then x-(1)/(x)=5 (b) 4(d)3(d)2

If x+(1)/(x)=2, then x^(3)+(1)/(x^(3))=64(b)14(c)8(d)2

If f(x) is a polynomial satisfying f(x)f((1)/(x))=f(x)+f((1)/(x)) and f(3)=28, then f(4) is equal to 63 (b) 65 (c) 17 (d) none of these

If x=5+2sqrt(6), then sqrt((x)/(2))-(1)/(sqrt(2x))= (a) 1 (b) 2 (c) 3 (d) 4

(-2)x\ (-3)x\ 6\ x\ (-1) is equal to (a)36 (b) -36 (c) 6 (d) -6

The solution of the equation 3/4 (x-1)=x-3 is: (a) x=8 (b) x=9 (c) x=7 (d) x=6

If (x-(1)/(x))=sqrt(21), the value of (x^(2)+(1)/(x^(2)))(x+(1)/(x)) is (a) 42(b)63(c)115 (d) 120(e)125

If (x^(4)+(1)/(x^(4)))=322, the value of (x-(1)/(x)) is (a) 4(b)3sqrt(2)(c)6(d)8

If "x=sqrt(5)+2",then "x-(1)/(x)" equals: (a) "4," (b) "3," (c) "2," (d) "1"