Question

solve this problem.....​

Answer 1

Answer:

plz mark as brainliest

simplify : (8/27) ^-2/3  -  (2/3 )^-2 - 7^0

= (2/3)^3*-2/3 - (2/3)^-2 - 1

= (2/3)^-2 - (2/3)^-2 -1

= -1

factorise :

x² + 1/x² + 2 - 2x- 2/x

= x² + (1/x)² + 2*x*1/x -2x -2/x

= (x+1/x)² -2(x+1/x)                  ( a² + b² +2ab = (a + b)²

(x + 1/x)(x + 1/x) - 2(x + 1/x)

[x + 1/x] (x + 1/x - 2)