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need help with

 

f(x)=x^2+3x-5, find the value of f(3)

 

f(x)=2x^2+4x^2, find the value of f(-3)

 Nov 30, 2018
 #1
avatar+18333 
+2

Put in -3   wherever there is an 'x' and calculate the result....

  Need more help than that?

 Nov 30, 2018
 #2
avatar+647 
+1

As EP said, substitute \(x=3\) and \(x=-3\) into your equations, and solve from there.

 

You are very welcome!

:P

 Dec 1, 2018

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