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What is the solution of the equation?

SamJones  Mar 1, 2018
 #1
avatar+90946 
+1

 √ [ 2x - 3 ]  + 3  =  x        subtract 3 from both sides

 

 √ [ 2x - 3 ]  =  x - 3        square both sides

 

2x - 3   =  x^2 - 6x + 9       subtract/add   2x, 3  to both sides

 

0  = x^2 - 8x + 12      factor

 

(x - 6) ( x - 2)  = 0

 

Setting each factor to 0  and solving for x  gives x  = 6  and x  =  2

 

Only the first solution solves the original problem

 

 

cool cool cool

CPhill  Mar 2, 2018

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