1.If `(1)/(8!)+(1)/(9!)=(x)/(10!)`, find `x` .

Prove that If (1)/(9!) +(1)/( 10!) =(x)/( 11!) , Find x.

If 1/(9!)+1/(10 !)=x/(11 !) , find xdot

If 1/(6!)+1/(7!)=x/(8!), find x

If 4^(1+x)+4^(1-x)=10 , find x.

If 2^(x)=4^(y)=8^(z) and (1)/(2x)+(1)/(4y)+(1)/(8z)=4 find the value of x.

Given ((8)/(27))^(x- 1) = ((9)/(4))^(2x+ 1) , find the value of x .

The expansion by the binomial theorem of (2 x + (1)/(8) )^(10) is 1024x^(10) + 640x^(9) + ax^(8) + bx^(7) + … Calculate (ii) coefficient of x^(8) in (3x -2) ( 2x + (1)/(8) )^(10) ,

The expansion by the binomial theorem of (2 x + (1)/(8) )^(10) is 1024x^(10) + 640x^(9) + ax^(8) + bx^(7) + … Calculate (iii) the value of x , for which the third ·and the fourth terms in the expansion of (2x + (1)/(8) )^(10) are equal.

If cos (2 sin^(-1) x) = (1)/(9) , then find the value of x

The expansion by the binomial theorem of (2 x + (1)/(8) )^(10) is 1024x^(10) + 640x^(9) + ax^(8) + bx^(7) + ... Calculate (i) the numerical value of a and b