Multiplying functions in math

Now Playing:Multiply functions – Example 1a

Determine the Product of Two Functions Algebraically
If $f(x)= 2-\sqrt{x}$
and
$g(x)=7\sqrt{x}-3$
Determine:
1. $(fg)(x)$
  
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2. $(fg)(25)$
  evaluate in two different ways
  
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Determine the Product of Two Functions Graphically
Given the graph of functions $f(x)$
and $g(x)$ ,
sketch the product of these two functions $(fg)(x)$