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For what values of x is \(x^2-2x>35\)? Express your answer in interval notation.

 Jul 26, 2019
 #1
avatar+18965 
+2

re-write as

x^2-2x-35 >0   factor

(x-7)(x+5) >0     so x = 7  and -5   will make equation EQUAL to zero

 

there are three intervals to consider

 

-infinity to -5       -5 to 7    and 7 to + infinity   

     works              nope             works

 

(-inf,-5) U (7, + inf) 

 Jul 26, 2019
 #2
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+1

Thank You ElectricPavlov!

 Jul 26, 2019

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