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17 February, 08:44

2x - 2y = 12

29. - 3y = - 2

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Answers (1)
  1. 17 February, 09:58
    0
    Olá boa tarde meu nome é "Guilherme" sou de Brasil e vou resolver a sua pergunta

    a) 2x - 2y = 12

    { a 2

    { b 2

    { c 12

    / / = b elevado 2 - 4 a. c

    / / = (2) elevado 2 - 4. 24

    / / = 4 - 4. 24

    / / = 24

    X = - b+ / / / = 2 - 5

    2a 2

    5

    2

    5

    2

    S = {20,10}

    b) 29. - 3y = - 2

    { a = 29

    { b = - 3

    { c = - 2

    / / = b elevado 2 - 4 a. c

    / / = (-6) - 4. 58

    / / = - 10. 58

    / / = - 48

    X = b + / / / = - 3 + 24

    5

    3

    5

    3

    S = { 15,15}

    Espero ter ajudado

    2a 2
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