\(f(x)\) is a fancy term for saying \(y\). It is mainly used in Trigonometry, Pre-Calculus, Calculus, and beyond.
\(f(x) = 2x^2 + 5\sqrt{x+2}\)
plug in the \(2\) into the \(x\).
\(f(2)= 2(2)^2 + 5\sqrt{2+2}\)
this gives:
\(f(2) = 8 + 5\sqrt{4}\)
square the 4.
\(f(2) = 8 + 5(2)\)
multiply \(5\) and \(2\).
\(f(2) = 8 + 10\)
add them together.
\(f(2) = 18\)
Glad to help.
