# If #f(x) = 2x^2- x# , what is f(-3)?

##### 2 Answers

Aug 13, 2016

#### Explanation:

To evaluate f( -3) substitute x = - 3 into f(x)

#rArrf(color(red)(-3))=2(color(red)(-3))^2-(color(red)(-3))#

#=(2xx9)+3=21#

Aug 13, 2016

#### Explanation:

For any function

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