Matematika

Pertanyaan

A.-5a²(2a²+8a²b-5ab²)
B.(2y-5) (2y+3)

1 Jawaban

  • Aljabar


    a)
    -5a² ( 2a² + 8a²b - 5ab²)
    = (-5a²)(2a²) + (-5a²)(8a²b) + (-5a²)(-5ab²)
    = -10a⁴ - 40a⁴b + 25a³b²

    b)
    (2y - 5)(2y + 3)
    = 4y² + 6y - 10y - 15
    = 4y² - 4y - 15

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