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 f(x)=-2x^2+6x-3 find f(-2)

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f(x)=-2x^2+6x-3 find f(-2)

 Apr 28, 2014

Best Answer 

 #1
avatar+118725 
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-2*(-2)^2+6*(-2)-3=

$${\mathtt{\,-\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\left(-{\mathtt{2}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{6}}{\mathtt{\,\times\,}}\left(-{\mathtt{2}}\right){\mathtt{\,-\,}}{\mathtt{3}} = -{\mathtt{23}}$$

 Apr 28, 2014

1+0 Answers

 #1
avatar+118725 
+8
Best Answer

-2*(-2)^2+6*(-2)-3=

$${\mathtt{\,-\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\left(-{\mathtt{2}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{6}}{\mathtt{\,\times\,}}\left(-{\mathtt{2}}\right){\mathtt{\,-\,}}{\mathtt{3}} = -{\mathtt{23}}$$

Melody Apr 28, 2014

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