Odpowiedzi

2010-02-02T20:30:21+01:00
{6x + 3½y = 2x + 1½y
{2x * y = -4
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4x = -2 y
2x * y = -4
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x= - ½y
2 * (-½y)*y = -4
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x = ...
-y² = -4
----
x= ...
y² = 4
----
y = 2
x= -1