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Answer:
x=5
Step-by-step explanation:
See the attachment
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Verified answer
Answer:
Positive root = 5
Step-by-step explanation:
[tex]\sqrt{3x² + 6\\[/tex] = 9
3x² + 6 = 9² ( Transpose square root to R.H.S. )
3x² +6 = 81
3x² = 81 - 6
3x² = 75
x² = 75/3
x² = 25
x = ±5
Positive root = 5
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