If x+3=0 then find the value of x

If x+y+z=0 then find the value of x^(3)+y^(3)+z^(3)

If |[x+2, x] , [4, 3]| = 0 then find the value of x

If x^2 -3x + 1 =0 , and xy = 1 then find the value of x^3-y^3 +3xy

If 3-((x^(2))/(12))<=f(x)<=3+((x^(3))/(9)) for all x!=0, then find the value of lim_(x rarr0)f(x)

find the value of x - 3x-5=0

If |[2,3,2],[x,x,x],[4,9,1]|+3=0 , then find the value of x.

If tan^(-1)x-cot^(-1)x=tan^(-1)(1/sqrt3) , x > 0 find the value of x and hence find the value of sec^(-1)(2/x)