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

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

User Jason Xu
by
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2 Answers

3 votes

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

User Adam Hoelscher
by
7.9k points
4 votes

Answer: 9 or 3

Explanation:

User Sirthud
by
7.4k points
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