+0  
 
0
217
1
avatar

 \(fg(x)= \sqrt{{20-5x} \over x}\)

solve the equation fg(x) = 5 

 Aug 16, 2019
 #1
avatar+6186 
+1

\(\sqrt{\dfrac{20-5x}{x}}=5\\ \dfrac{20-5x}{x} = 25\\ 20-5x=25x\\ 20=30x\\ x=\dfrac 2 3\)

.
 Aug 16, 2019

14 Online Users

avatar
avatar