Respuesta :

glee0079
You are going to want to plug in -1 for c and -4 for d. Then take -1^2 which is just 1. And -4^2 which is 16. Simplify in the next step, simplify again. When you get to -8/-18, the negatives cancel out and 8/18 reduces to 4/9.
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djtwinx017

Answer:

-8/14 or -4/7

Step-by-step explanation:

[tex]\frac{5c^2 - d^2 + 3}{2c - 4d}[/tex] given c = -1 and d = -4

Substitute the values of c and d into the given equation:

[tex]\frac{5c^2 - d^2 + 3}{2c - 4d}[/tex]

= [tex]\frac{5(-1)^2 - (-4)^2 + 3}{2(-1) -4(-4)}[/tex]  

= [tex]\frac{5( 1 ) - (16) + 3}{-2 + 16 }[/tex]  

=  [tex]\frac{-8 }{14} = \frac{-4}{7}[/tex]  

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