Matematika

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Minta tolong no 9 10
Minta tolong no 9 10

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  • 9) (√3 - √6)/(√3 - √2)
    = (√3 - √6)/(√3 - √2) . (√3 + √2)/(√3 + √2)
    = (3 + √6 - √18 - √12) / (3 - 2)
    = (3 + √6 - √9√2 - √4√3) / 1
    = 3 + √6 - 3√2 - 2√3

    10) 5/(^3√25 + ^3√5 + 1)
    = 5/(^3√25 + ^3√5 + 1) . (^3√5 - 1)/(^3√5 - 1)
    = 5(^3√5 - 1) / (^3√125 - ^3√25 + ^3√25 - ^3√5 + ^3√5 - 1)
    = 5(^3√5 - 1) / (5 - 1)
    = (5 . ^3√5 - 5) / 4

    = 5/4 (^3√5 - 1)

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