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

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Wjhguitarman asked Jun 3, 2022

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1 vote

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

Mathematics
college

Wjhguitarman asked Jun 3, 2022

by Wjhguitarman

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Explanation:

$3 {x}^(2) + 18x - 81 = 0 \\ \\ {x}^(2) + 6x - 27 = 0 \\ (x - 3)(x + 9) = 0 \\ x - 3 = 0 \: \: \: \: \: x + 9 = 0 \\ x = 3 \: \: \: \: x = - 9$

Charles Gomes answered Jun 5, 2022

by Charles Gomes

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15 votes

Answer: 9 or 3

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Noelicus answered Jun 9, 2022

by Noelicus

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