Respuesta :

jimohfawwazajibola25

Answer:

squareroot of x - 4. x must be greater than or equal to 4

Step-by-step explanation:

y=x^2+4

x^2 = y - 4

x = squareroot of y - 4

It implies that the square root of the function y=x^2+4 is

squareroot of x - 4

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