Ответ:
[tex]8a + 15[/tex]
удачки!!
Объяснение:
[tex](a + 1)(a - 1) - (a + 4 {)}^{2} = {a}^{2} - 1 - {a}^{2} + 8a + 16 = {a}^{2} - {a}^{2} + 8a + 15 = 8a + 15[/tex]
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Verified answer
Ответ:
[tex]8a + 15[/tex]
удачки!!
Объяснение:
[tex](a + 1)(a - 1) - (a + 4 {)}^{2} = {a}^{2} - 1 - {a}^{2} + 8a + 16 = {a}^{2} - {a}^{2} + 8a + 15 = 8a + 15[/tex]