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Find all values of c such that c/(c - 5) = 4/(c + 4).

 Jun 25, 2021

Best Answer 

 #1
avatar+33549 
+2

Cross multiply to get

 

c ( c+4) = 4 ( c-5)

c^2 + 4c = 4c-20

c^2 = -20

 

c = +- ( sqrt -20) = +-  2i sqrt 5

 Jun 25, 2021
 #1
avatar+33549 
+2
Best Answer

Cross multiply to get

 

c ( c+4) = 4 ( c-5)

c^2 + 4c = 4c-20

c^2 = -20

 

c = +- ( sqrt -20) = +-  2i sqrt 5

ElectricPavlov Jun 25, 2021

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