lf `| [ x , 1 ] , [ 1 , 2 ] | = 0` , then find the value of x

If | [ x , 2 , 4 ] , [ 3 , -1 , 2 ] , [ 4, 5 , 1 ] | = 0 , find the value of x

1/8 -(2x)/4 + 1 = 0 , find the value of x

If [ [ 1 , 3 ] , [ 0 , 0] ] [ [ 2 ] , [ -1 ] ] = [ [ x ] , [ 0 ] ] , find the value of x

If 2 ^(x +1) + 2 ^( x-1)= 80, then find the value of x.

If |[1,x,x^2] , [x,x^2,1] , [x^2,1,x]|=3 then find the value of |[x^3-1, 0, x-x^4] , [0,x-x^4, x^3-1] , [x-x^4, x^3-1, 0]|

If ( x + 1 )( x + 4 ) - ( x -2 )( x - 1 ) = 0 , find the value of x

If x - 1/x = a , find the value of x^2 + 1/x^2

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

If x^(2) -3x+1=0 , find the value of x+(1)/(x)