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D( x )
97-x < 0
97-x < 0
97-x < 0
97-x < 0
-x < -97 // * -1
x > 97
x in (-oo:97>
43 = (97-x)^(1/2) // - (97-x)^(1/2)
43-(97-x)^(1/2) = 0
-(97-x)^(1/2) = 43 // - 43
-(97-x)^(1/2) = -43 // ^ 2
abs(97-x) = (-43)^2 // - (-43)^2
abs(97-x)-(-43)^2 = 0
x in (-oo:+oo)
abs(97-x)
97-x >= 0
97-x >= 0
-x >= -97 // * -1
x <= 97
x in (-oo:97>
97-x-(-43)^2 = 0
x in (97:+oo)
x-(-43)^2-97 = 0
abs(97-x)-(-43)^2 = 0
/ | 97-x-(-43)^2 = 0 i x in (-oo:97> | x-(-43)^2-97 = 0 i x in (97:+oo)
x in (-oo:97>
97-x-(-43)^2 = 0
-x-1752 = 0 // + 1752
-x = 1752 // * -1
x = -1752
x in (97:+oo)
x-(-43)^2-97 = 0
x-1946 = 0 // + 1946
x = 1946
x in { 1946}
x = -1752
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