Question

How do I do this algebra??

Answer 1

Answer:

75

Step-by-step explanation:

Square both sides. 225=3x^2

divide both sides by 3

x^2=75

x=√75= 5√3

Answer 2

$15 = x \sqrt{3} \\ \\ 1. \: 15 = \sqrt{3x} \\ 2. \: \frac{15}{ \sqrt{3} } = x \\ 3. \: x = \frac{15}{ \sqrt{3} }$