, 01 2006 . 22:48
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- b - . b a c .
b - a = c, b = a + c. , : b2 - ab = ca + c2. bc. : b2- ab - bc = ca + c2 - bc, b(b - a - c) = - c(b - a - c),
b = - c, c = b - a, b = a - b, a = 2b.
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b(b-a-c )= -c(b-a-c) (b-a-c), , b-a-c=0., .
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