If f(x) = 2(x)^2 + 5 square root (x+2), the domain for f(x) is all real numbers greater than or equal to

Hi Felicia!



Remember that your square root function can only calculate positive values and zero. We can't put a negative under a square root.

This means that the "stuff" under the root must be greater than or equal to zero (positive).



Solve for x in this equation, subtracting 2 from each side,



This is our domain, all x values -2 or larger.

Hope that helps! :)

127 millimeters is the answer