Matematika

Pertanyaan

1.( x2 - 3x - 5 ) (x2 - x + 7 ) =

2. ( p + p2 + 5 ) (p + p2 - 4) =

1 Jawaban

  • 1) (x^2 - 3x - 5)(x^2 - x + 7)
    = x^4 - x^3 + 7x^2 - 3x^3 + 3x^2 - 21x - 5x^2 + 5x - 35
    = x^4 - 4x^3 + 5x^2 - 16x - 35

    2) (p + p^2 + 5)(p + p^2 - 4)
    = p^2 + p^3 - 4p + p^3 + p^4 - 4p^2 + 5p + 5p^2 - 20
    = p^4 + 2p^3 + 2p^2 + p - 20

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