Respuesta :

mhanifa

Answer:

12

Step-by-step explanation:

  • a = 4 and b = 7
  • 5a² - 11b + 9 = ?

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Plugging in values of a and b and simplifying to get answer:

  • 5a² - 11b + 9=
  • 5*4² - 11*7 + 9=
  • 5*16 - 77 + 9 =
  • 80 - 77 + 9 =
  • 3+ 9 = 12

Answer is 12