What is the domain of the function y= square root of x +4

[- 4, ∞ )

Step-by-step explanation:

the expression inside the radical must be greater than or equal to zero

x +4 ≥ 0 ⇔ x ≥ - 4

domain: x ∈ [- 4, ∞ )

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225