Matematika

Pertanyaan

TABEL
A. B.
1 ) 2x - 1 ) 1 - x. A-B... B-A....

2) 3x. ) 2x + 1. A+B... B+A...

3) 5. ) 2x - 4 A+B... B-A...

PAKE CARANYA...

1 Jawaban

  • 1) A - B = (2x - 1) - (1 - x)
    = 2x + x - 1 - 1
    = 3x - 2
    B - A = (1 - x) - (2x - 1)
    = 1 + 1 - x - 2x
    = 2 - 3x

    2) A + B = 3x + (2x + 1)
    = 5x + 1
    B + A = (2x + 1) + 3x
    = 5x + 1

    3) A + B = 5 + (2x - 4)
    = 2x + 5 - 4
    = 2x + 1
    B - A = (2x - 4) - 5
    = 2x - 4 - 5
    = 2x - 9

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