How to finde the following:
x, if f(x) = 0
h(6) if h(x) = square root(18 - 4x)
Let's assume $\displaystyle f(x) = h(x)$
$\displaystyle h(x) = \sqrt{18-4x}$
$\displaystyle h(6) = \sqrt{18-4(6)} \Rightarrow \sqrt{-24} = 2i\sqrt{6}$
$\displaystyle h(x) = 0$
$\displaystyle \sqrt{18-4x} = 0$
$\displaystyle 18-4x = 0$
$\displaystyle 4x=18$
$\displaystyle x=\frac{9}{2}$