SOLUTION: Help ME please!!!! f(x)=-x(cubed)+2x(squared)-7x+9 find (a)f(-2), (b)f(0), and (c)f(2) I appreciate the help Heather

Question 110897: Help ME please!!!!
f(x)=-x(cubed)+2x(squared)-7x+9
find (a)f(-2), (b)f(0), and (c)f(2)
I appreciate the help
Heather
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given function.

Plug in . In other words, replace each x with -2.

Evaluate to get -8.

Evaluate to get 4.

Multiply -1 and -8 to get 8

Multiply 2 and 4 to get 8

Multiply -7 and -2 to get 14

Now combine like terms

-----------Now let's evaluate another value---------

Start with the given function.

Plug in . In other words, replace each x with 0.

Evaluate to get 0.

Evaluate to get 0.

Multiply -1 and 0 to get 0

Multiply 2 and 0 to get 0

Multiply -7 and 0 to get 0

Now combine like terms

-----------Now let's evaluate another value---------

Start with the given function.

Plug in . In other words, replace each x with 2.

Evaluate to get 8.

Evaluate to get 4.

Multiply -1 and 8 to get -8

Multiply 2 and 4 to get 8

Multiply -7 and 2 to get -14

Now combine like terms

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