Ответ:
15
Объяснение:
(4-y)^2 - y * (y+1) = 16 - 8y + y^2 - y^2 - y = 16 - 9y
16 - 9 * 1/9 = 16 - 1 = 15
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Ответ:
15
Объяснение:
(4-y)^2 - y * (y+1) = 16 - 8y + y^2 - y^2 - y = 16 - 9y
16 - 9 * 1/9 = 16 - 1 = 15