Find the value of x if.`|(x,-1,2),(2x,1,-3),(3,-4,5)|=29`

Find the value of x if |(1,4,20),(1,-2,-5),(1,2x,5x^2)|=0

Find value of x if abs{:(x, 3, 2),(x, x, 1),(1,0,1):}= 9

Find the value of x^3 +2 x^2 -3x+21, if x=1+2i

Without expanding, find the value of: (2x - 1)^4 + 4(2x - 1)^3 (3 - 2x) + 6(2x - 1)^2 (3 - 2x)^2 + 4(2x - 1) (3 - 2x)^3 + (3 - 2x)^4

Without expanding, find the value of: (i) (2x - 1)^5 + 5(2x - 1)^4 (1 - x) + 10(2x - 1)^3 (1 - x)^2 + 10(2x - 1)^2 (1 - x)^3 + 5(2x - 1) (1 - x)^4 + (1 - x)5