Ответ:
(x2 - 7x +3x - 21) - (x2 - 16) = 11 x2 - 4x - 21 - x2 + 16 = 11
-4x - 5 = 11 -4x = 5+11 -4x = 16 x = 16 : (-4) x = -4
Объяснение:
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Ответ:
(x2 - 7x +3x - 21) - (x2 - 16) = 11 x2 - 4x - 21 - x2 + 16 = 11
-4x - 5 = 11 -4x = 5+11 -4x = 16 x = 16 : (-4) x = -4
Объяснение: