2g(-1)+f(0)

Question

evaluate 

 

 

Answer 1

You didn't tell us what f(x) and g(x) are, so I can't solve your exact problem.  But I can show you how to do it using a different f(x) and g(x):

 

Let f(x) = 2x - 6 and g(x) = x² + 1

 

The notation f(0) means f(x=0).  Set x = 0 in the equation and solve:

 

     f(x) = 2x - 6

     f(0) = 2(0) - 6 = 0 - 6 = -6

 

Similarly, g(-1) means g(x=-1).  Set x = -1 in the g(x) equation and solve:

 

     g(x) = x² + 1

     g(-1) = (-1)² + 1 = 1 + 1 = 2

 

2g(-1) means multiply g(-1) by 2:

 

     2g(-1) = 2(2) = 4

 

Now put it all together:

 

    2g(-1) + f(0) = 4 - 6 = -2

 

Use the same technique for the actual f(x) and g(x) in your problem.