Tishelle Tishelle
  • 20-08-2021
  • Mathematics
contestada

Solve the following 3x^2+18-81=0

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nayeem8uddin nayeem8uddin
  • 20-08-2021

Answer: 9 or 3

Step-by-step explanation:

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bdanso117
bdanso117 bdanso117
  • 20-08-2021

Step-by-step explanation:

[tex]3 {x}^{2} + 18x - 81 = 0 \\ \\ {x}^{2} + 6x - 27 = 0 \\ (x - 3)(x + 9) = 0 \\ x - 3 = 0 \: \: \: \: \: x + 9 = 0 \\ x = 3 \: \: \: \: x = - 9[/tex]

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