SOLUTION: given R(x)=3x2-2x+4, evaluate R(-2)

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Question 235240: given R(x)=3x2-2x+4, evaluate R(-2)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

R%28x%29=3x%5E2-2x%2B4 Start with the given equation.


R%28-2%29=3%28-2%29%5E2-2%28-2%29%2B4 Plug in x=-2.


R%28-2%29=3%284%29-2%28-2%29%2B4 Square -2 to get 4.


R%28-2%29=12-2%28-2%29%2B4 Multiply 3 and 4 to get 12.


R%28-2%29=12%2B4%2B4 Multiply -2 and -2 to get 4.


R%28-2%29=20 Combine like terms.