Mathématiques

Question

(2t + 1)² _ (1 + t)² = ??

2 Réponse

  • (2t + 1)² - (1 + t)²
    = (2t + 1 - 1 - t)(2t + 1 + 1 + t)
    = t(3t + 2)
  • Bonsoir


    (2t + 1)²  - (1 + t)²

    = [(2t+1) + (1+t)][(2t+1)-(t+1)]

    = (2t + 1 + 1 + t)(2t + 1 - t - 1)

    = t(3t + 2)

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