dianapantaleon55 dianapantaleon55
  • 11-07-2020
  • Mathematics
contestada

Solve the equation x^2 – 16x + 25 = 0 to the nearest tenth.

Respuesta :

bekkarmahdi702
bekkarmahdi702 bekkarmahdi702
  • 11-07-2020

Answer:

1.8 and 14.3

Step-by-step explanation:

Our equation is a quadratic equation so we will use the dicriminant method

  • Let Δ be our dicriminant
  • a=1
  • b= -16
  • c= 25
  • Δ= (-16)²-4*25*1=156≥0
  • so we have two solutions : x and y
  • x= (16-[tex]\sqrt{156}[/tex])/2= 1.7555≈ 1.8
  • y=(16+[tex]\sqrt{156}[/tex])/2=14.244≈ 14.3

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