Need help with Quadratic Equation that you have to solve with Square Root?

Question

Can someone help me solve this Quadratic Equation by square root? If you could do it step-by-step I would appreciate but if it's too much work then it's okay, just don't bother.

3x² + 1 = 58

Also for this certain question my teacher has stated "(round your answers to the nearest hundredths place)".

Answer 1

3x²+1 = 58     (subtract 1 from both sides)

3x² = 57        (divide both sides by 3 )

x² = 19  (take square root of both sides)

x = ±√(19)  (use calculator)

x ≈ ±4.36