SOLUTION: If(x)=5x square 2 -2x f(-3)

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Question 216202: If(x)=5x square 2 -2x
f(-3)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=5x%5E2-2x Start with the given equation.


f%28-3%29=5%28-3%29%5E2-2%28-3%29 Plug in x=-3.


f%28-3%29=5%289%29-2%28-3%29 Square -3 to get 9.


f%28-3%29=45-2%28-3%29 Multiply 5 and 9 to get 45.


f%28-3%29=45%2B6 Multiply -2 and -3 to get 6.


f%28-3%29=51 Combine like terms.