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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
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
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