+0  
 
+1
184
3
avatar+878 

If f(x) = x^2 - 3x, then find f(-3).

 

Is it 0?
 

 Apr 21, 2019
 #1
avatar+106539 
+2

f(-3)  = (-3)^2  -3(-3)    =  9 + 9  =  18

 

 

cool  cool cool

 Apr 21, 2019
 #2
avatar+878 
+1

Thank you! I was debating between that answer! laugh

ant101  Apr 21, 2019
 #3
avatar+128 
-2

Substitute the variables.

 

f(-3) = -3^2 -(-9)

 

After that, simplify that...

 

f(-3) = 9+9 = 18

 

The answer is 18.

 

~~Hypotenuisance

 Apr 21, 2019

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