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Jawapan:
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Penjelasan:
Bagaimana anda mempermudah (sqrt5) / (sqrt5-sqrt3)?
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(5 + sqrt (15)) / 2 => sqrt (5) / (sqrt (5) - sqrt (3)) Multiply and divide by (sqrt (5) (sqrt (5) - sqrt (3)) × (sqrt (5) + sqrt (3)) / (sqrt (5) + sqrt (3) =) (Sqrt (5) (sqrt (5) + sqrt (3))) (/ ((sqrt (5) - sqrt (3) (2) (2) (2) (2) (2) (a) (5) sqrt (5) + sqrt (5) sqrt (3)) / (5 - 3) => (5 + sqrt (15)
Bagaimana anda mempermudah (sqrt5) ^ 6?
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Anda memerlukan harta ini: (x ^ a) ^ b = x ^ (ab), dan equallity ini: sqrt x = x ^ (1/2), untuk mempermudah: (sqrt 5) ^ 6 = 2)) ^ 6 = 5 ^ (6/2) = 5 ^ 3 = 125
Bagaimana anda mempermudah (sqrt5 + 3) / (4-sqrt5)?
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[4 + sqrt5] / [4 + sqrt5] = [4sqrt5] + 12 [sqrt5 + 3] / [4 - sqrt5] = [sqrt5 + 3] 5 + 3sqrt5] / [16 - 5] = [17 + 7sqrt5] / 11 = 17/11 + [7sqrt5] / 11