" (B) "(2x^(3)-(1)/(3x^(3)))^(10)" के प्रसार र्षे "x^(5)" का । "[" उ.प्र."2015(HF)]

Find the coefficient of (i) x^(5)" in the expansion of "(x+3)^(8) (ii) x^(6) " in the expansion of "(3x^(2) - a/(3x))^(9) (iii) x^(-15) " in the expansion of " (3x^(2) - a/(3x^(3)))^(10). (iv) a^(7)b^(5)" in the expansion of "(a-2b)^(12) .

(3^((1)/(5)))^(x)+(3^((1)/(10)))^(x-10)=84

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

3/(5x)-2/(3x)=1/10

(2x+5)/3=3x-10

If x^(3)+(1)/(x^(3))=110, then x+(1)/(x)=5 (b) 10 (c) 15 (d) none of these

If (2x+3)/((x+1)(x-3))=a/(x+1)+b/(x-3) , then a + b =

The value of int x^(5)(x^(10)+x^(5)+1)(2x^(10)+3x^(5)+6)^(1/5)dx is (A) (1)/(6)(2x^(10)+3x^(5)+6)^(1/5)+c (B) (1)/(36)(2x^(15)+3x^(10)+6x^(5))^(6/5)+c (C) (1)/(36)(2x^(15)+3x^(10)+6x^(5))^(11/5)+c (D) x^(15)+3x^(10)+(x^(5))/(5)+c

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