zillaminati zillaminati
  • 12-12-2019
  • Mathematics
contestada

Solve by square roots:
2x squared +11 = 131

Respuesta :

jimrgrant1 jimrgrant1
  • 12-12-2019

Answer:

x = ± 2[tex]\sqrt{15}[/tex]

Step-by-step explanation:

Given

2x² + 11 = 131 ( subtract 11 from both sides )

2x² = 120 ( divide both sides by 2 )

x² = 60 ( take the square root of both sides )

x = ± [tex]\sqrt{60}[/tex] = ± [tex]\sqrt{4(15)}[/tex] = ± 2[tex]\sqrt{15}[/tex]

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