" (vi) "9^(x+2)=720+9^(x)

Solve for x : 9^(x + 2)) = 720 + 9^(x)

Determine (8x)^(x), if 9^(x+2)=240+9^(x)

If 9^(x+2)=720+9^(x), find the value of (4x)^((1)/(x))

Determine (8x)^x , if 9^(x+2)=240+9^x

If 9^(x+2)=720+9^x , find the value of (4x)^(1/x)

Add the given polynomials.(i) x^(3)-2x^(2)-9;5x^(3)+2x+9

Factorise the following : (i) 2x^(2)+9x+9 (ii) 2x^(2)+9x-5

Factorise the following : (i) 2x^(2)+9x+9 (ii) 2x^(2)+9x-5

If sum _(i=1) ^(9) (x _(i) - 5) = 9 and sum_(i =1) ^(9) (x _(i) - 5) ^(2) = 45, then the standard deviation of the 9 terms x _(1), x _(2),....,x _(9) is