( √ 10 / ( 4X - 26) ) ^2 = ( 1/7 ) ^2
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10 / ( 4X - 26) > 0 ---> 4X - 26 ≠ 0 ; X ≠ 6,5
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10 / ( 4X - 26) = 1 /49
10 * 49 = 4X - 26
4X - 26 = 490
4X = 516
X = 129
===================================
( √ ( 4X + 32) / 7 ) ^ 2 = 6
-----------------
(4X + 32 ) / 7 > 0
4X > - 32
X > - 8
--------------
( 4X + 32 ) / 7 = 36
4X + 32 = 252
4X = 220
X = 55