Question

(a5 + a4 + a3 + a²) = (a + 1)​

Answer 1

Answer:

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Answer 2

Answer:

» (a⁵ + a⁴ + a³ + a²) = (a + 1)

» a⁴ (a + 1) + a² (a + 1) = (a + 1)

» (a + 1) (a⁴ + a²) = (a + 1)

» a⁴ + a² - 1 = 0

» a² = [-1 ± √5]/2

» a = ± √[(-1 ± √5)/2]