SOLUTION: 3n^2 - 4m if n = -2 and m = 5

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Question 118369This question is from textbook Barrons Math The Easy Way
: 3n^2 - 4m if n = -2 and m = 5 This question is from textbook Barrons Math The Easy Way

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3n%5E2+-+4m Start with the given expression


3%28-2%29%5E2+-+4%285%29 Plug in n+=+-2 and m+=+5


3%284%29+-+4%285%29 Square -2 to get 4. Remember %28-2%29%5E2=%28-2%29%28-2%29=4


12-20 Multiply 3 and 4 to get 12. Multiply 4 and 5 to get 20.


-8 Subtract.


So 3n%5E2+-+4m=-8 when n+=+-2 and m+=+5