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  • Matematika

    Tentukan hasil perkalian berikut!
    a.(2x-1) (x+1)
    b.(4x+1) (3-2x)

  • #2
    a. (2x - 1)(x + 1) = 2x^2 + 2x - x - 1 = 2x^2 + x - 1

    b. (4x + 1)(3 - 2x) = 12x - 8x^× + 3 - 2x = -8x^2 + 10x + 3

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    • #3
      a. (2x-1)(x+1)
      =2x²+2x-x-1
      =2x²+x-1

      b. (4x+1)(3-2x)
      =12x-8x²+3-2x
      = -8x²+12x-2x+3
      = -8x²+10x+3

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      • #4
        Wah soal begini bisa kalian diskusikan pada teman-teman belajar kalian atau bisa meminta bantuan guru les kalian dengan begitu masalah soal matematika terpecahkan dan bisa kalian jabarkan lagi
        Last edited by akongs09; 10-24-2019, 02:50 AM.

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        • #5
          Tentukan garis Q(-4,6) m=3/4 tolong jawab

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          • #6
            Originally posted by M dzkawan ikram View Post
            Tentukan garis Q(-4,6) m=3/4 tolong jawab
            y - y1 = m(x - x1)
            y - 6 = (3/4)(x - (-4))
            y - 6 = (3/4)(x + 4)
            4(y - 6) = 3(x + 4)
            4y - 24 = 3x + 12
            4y - 3x = 12 + 24
            4y - 3x = 36

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