jaysoncano1433 jaysoncano1433
  • 11-02-2022
  • Mathematics
contestada

2x² + 3 = 39 extracring square roots

Respuesta :

dedimaghost
dedimaghost dedimaghost
  • 11-02-2022

Answer:

x=9

Step-by-step explanation:

first, subtract 3 from both sides so 2x^2=36, then, divide both sides by 2 so x^2=18 and divide 18 by 2 and 9^2=18

Answer Link
jimrgrant1 jimrgrant1
  • 11-02-2022

Answer:

x = ± 3[tex]\sqrt{2}[/tex]

Step-by-step explanation:

2x² + 3 = 39 ( subtract 3 from both sides )

2x² = 36 ( divide both sides by 2 )

x² = 18 ( take square root of both sides )

x = ± [tex]\sqrt{18}[/tex] = ± [tex]\sqrt{9(2)}[/tex] = ± ( [tex]\sqrt{9}[/tex] × [tex]\sqrt{2}[/tex] ) = ± 3[tex]\sqrt{2}[/tex]

Answer Link

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