SOLUTION: Given {{{f(x)=2x^2-3x+6}}} Find f(-4)

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Question 128484: Given

f%28x%29=2x%5E2-3x%2B6

Find f(-4)



Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=2x%5E2-3x%2B6 Start with the given function


f%28-4%29=2%28-4%29%5E2-3%28-4%29%2B6 Plug in x=-4


f%28-4%29=2%2A16-3%2A-4%2B6 Raise -4 to the 2nd power to get 16


f%28-4%29=32-3%2A-4%2B6 Multiply 2 and 16 to get 32


f%28-4%29=32--12%2B6 Multiply 3 and -4 to get -12


f%28-4%29=44%2B6 Subtract -12 from 32 to get 44


f%28-4%29=50 Add 44 and 6 to get 50