TAylor P.

asked • 09/19/17

For the function G defined by G(x) = -5x2 + 5x - 1, evaluate G(-13).

I do not know hoe to do this problem 

Kenneth S.

you just put negative 13 in wherever x appears, and calculate!
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09/19/17

1 Expert Answer

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Andy C. answered • 09/19/17

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G(-13) = -5*(-13)^2 + 5(-13) - 1 = 5*169 + 5(-13) - 1 = 845 - 65 - 1= 779
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Andy C.

Yes, thank you Kenneth.
Taylor please note that it doing so, be careful with the parenthesis.
 
(-13)^2 = (-13)*(-13) <--- by definition of squaring a number
             = 169
 
but   -13^2 = - 13*13 = -169 <--- only one copy of the negative
 
 
 
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09/20/17

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