Matematika

Pertanyaan

rasionalkan akar 6 di bagi akar 7- 2 akar 10

1 Jawaban

  • V6/(V7 - 2V10)
    = [V6/(V7 - 2V10)] × [(V7 + 2V10)/(V7 + 2V10)]
    = [V6(V7 + 2V10)]/[(V7 - 2V10)(V7 + 2V10)]
    = (V42 + 2V60)/(7 - (4 × 10))
    = (V42 + 2V(4 × 15))/(7 - 40)
    = (V42 + (2 × 2)V15)/(-33)
    = (V42 + 4V15)/(-33)

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