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what is the solution set for x^2-6x=8

 Apr 25, 2019
 #1
avatar+100549 
+1

x^2 - 6x  = 8      complete the square on x

 

x^2 - 6x + 9  =  8 + 9

 

(x - 3)^2  =  17     take both roots

 

x -  3  =   ±√17      add 3 to both sides

 

x  = 3 ±√17

 

 

cool cool cool

 Apr 25, 2019
 #2
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+1

It is about -1.88 and about 7.12

using the quadratic formula

 Apr 25, 2019

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