Question

Find the positive root of √3x² + 6 = 9

Answer 1

solve 2 or 3 similar question then your problem will very easy

Answer 2

$\bf\huge\sqrt{3x^2 + 6} = 9$

3x^2 + 6 = 81

⇒ 3x^2 = 81 – 6 = 75

x^2 = 75  ÷ 3

x^2 = 25

x = ±5

Positive root = 5