Odpowiedź:
I x - 3 I = I 2 x - 9 I
więc x - 3 = 2 x - 9 lub x - 3 = -( 2 x - 9)
-3 + 9 = 2 x - x x - 3 = -2 x + 9
6 = x x +2 x = 9 + 3
x = 6 3 x = 12 / : 3
x = 6 lub x = 4
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Odpowiedź:
I x - 3 I = I 2 x - 9 I
więc x - 3 = 2 x - 9 lub x - 3 = -( 2 x - 9)
-3 + 9 = 2 x - x x - 3 = -2 x + 9
6 = x x +2 x = 9 + 3
x = 6 3 x = 12 / : 3
x = 6 lub x = 4
===================
Szczegółowe wyjaśnienie: