Exercise 75 Page 303

Using the function g(x), we want to evaluate for the given value, g( 2)-5. There are two steps involved in this evaluation.

1. We need to substitute 2 for each value of x.
2. We need to subtract 5.Let's first take care of the substitution. To do this, we need to substitute 2 for x in each instance of the x-variable.
   g(x) = 2x^2 + 5

   Substitute

   x= 2

   g( 2) = 2( 2)^2+5

   CalcPow

   Calculate power

   g(2)=2(4)+5

   Multiply

   Multiply

   g(2)=8+5

   AddTerms

   Add terms

   g(2)=13
   Now we can subtract 5 from the function to get final result.
   g(2)-5

   Substitute

   g(2)= 13

   13-5

   SubTerm

   Subtract term

   8