Question

f f(x)=2(x)^2+5 sqrt (+2) complete the following statement: The domain for f(x) is all real numbers greater than or equal to _____.

Answer 1

f(x) = 2x^2 + 5sqrt(2)

Then since the minimum of x^2 is 0, so f(x) must be greater or equal to 5sqrt(2)