`x/2+x/8=1/8`

Find the variance and standard deviation of the random variable X whose probability distribution is given below : {:(x,0,1,2,3),(P(X=x),1/8,3/8,3/8,1/8):}

If x + 1/x = 8 and x - 1/x = -8 , then find the value of x^2 - 1/(x^2)

Find the value of : ( x^(1/2 ) + x^(-1/2 ) ) times ( x^(1/4 ) + x^(-1/4 ) ) times ( x^(1/8 ) + x^(-1/8 ) ) times ( x^(1/8 ) - x^(-1/8 ) ) ( a ) x + 1/x ( b ) ( x^2 -1 )/x

If (8/3)^(3-x) = (3/8 )^(2x-1) , then x =

If (2^x)/( 1+ 2^x ) = (1)/(4) , then find the value of (8^x)/( 1+ 8^x) .

If x^(8)+(1)/(x^(8))=a then find (i)x+(1)/(x)

If x^(2) + x + 1 is a factor of the polynomial 3x^(3) + 8x^(2) + 8x + a, then find the value of a.

If x^(2)-x-1=0 then the value of x^(8)+(1)/(x^(8)) equals

If x-1/(x)=8 , the value of x^(2)+1/(x^(2)) is