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Tiagao
@Tiagao
April 2020
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Me ajudem a resolver...
x⁴-16/x-2 = ?
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Heberwagner
O produto notável (a² - b²) = (a + b)(a - b), logo:
x⁴ - 16 = (x² + 4)(x² - 4)
x² - 4 = (x + 2)(x - 2), substituindo temos:
(x⁴ - 16)/(x - 2) => [(x² + 4)(x² - 4)]/(x-2) => (x² + 4)(x + 2)(x - 2)/(x - 2) =
(x² + 4)(x + 2)
3 votes
Thanks 7
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x⁴ - 16 = (x² + 4)(x² - 4)
x² - 4 = (x + 2)(x - 2), substituindo temos:
(x⁴ - 16)/(x - 2) => [(x² + 4)(x² - 4)]/(x-2) => (x² + 4)(x + 2)(x - 2)/(x - 2) = (x² + 4)(x + 2)