Question

answer in detail. I need the full process plz fast.

Answer 1

find values of x:
3x'2 + 2 = 7x
3x'2 -7x+2=0
3x'2 -6x -x +2=0
3x (x-2) -1(x-2)
(3x-1)(x-2)
x=2  ; 1/3
    1st case
9x'2 - 4/x'2
9 X 4 - 4/ 4
36 -1
=35
   2nd case
9 X 1/9 - 4/1/9
1 - 36
=-35