+0  
 
0
59
3
avatar+493 

pt 2

 Jun 21, 2021
edited by mworkhard222  Jun 21, 2021
 #1
avatar+33360 
+2

Solve the inequality

 

(x+1)(X-1) > 8

X^2 -1 >8

X^2 >9

X >3   or   x< -3       looks like 4  out of the interval of 10      40 %

 Jun 21, 2021
 #2
avatar+493 
+2

thanks! but it's 60

mworkhard222  Jun 21, 2021
edited by mworkhard222  Jun 21, 2021
 #3
avatar+33360 
+2

I failed to account for the fact that  (x-1)   might be negative or positive !   My bad !   (,.....as they say)

ElectricPavlov  Jun 22, 2021

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