If `|{:(3x, 7), (-2, 4):}| = |{:(8, 7), (6, 4):}|`, find the value of x.

if |{:(3x,7),(2,4):}|=10 , find the value of x.

If {:|(3x,7),(6,4)|=|(8,7),(6,4)| , find the value of 'x'.

If |3x7-2 4|=|8 7 6 4| , find the value of xdot

If {:((2,3),(5,7)), ((1,-3),(-2,4)),= ((-4,6),(-9,x)) , find the value of 'x'.

If 1(2)/(3)+ ( 2)/( 7 ) xx ( x)/( 7) = 1( 1)/( 4) xx ( 2)/( 3) +( 1)/( 6) then find the value of x.

If x=(sqrt3+1)/2 find the value of 4x^3+2x^2-8x+7

If x=(sqrt(3)+1)/2, find the value of 4x^3+2x^2-8x+7.

If different values of variable x are 9.8, 5.4 , 3.7 , 1.7 , 1.8 , 2.6 , 2.8 , 10.5 and 11.1 , find the value of sum(x - barx)