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2x^1/2-9=11

 May 13, 2017
 #1
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2x^1/2-9 = 11      add 9  to both sides

 

2x ^(1/2)  =  20      divide both sides by 2

 

x^(1/2)  =  10        square both sides

 

[ x ^(1/2) ] ^2   =  10^2

 

x  =   100

 

 

cool cool cool

 May 13, 2017
 #2
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Well you just made that too easy!  OK, I always get confused when I see the 1/2...thank you!  I'll be coming back for more.  

 May 13, 2017

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