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what is the solution set of the equation 4^2-9=0 

Guest Oct 17, 2017
 #1
avatar+7153 
+1

Is something missing from your equation?

 

As it is...

 

42 - 9   =   16 - 9   =   7     ≠   0      It is just a false equation.

hectictar  Oct 17, 2017
 #2
avatar+87293 
+2

I think this might be

 

4x^2  -  9  = 0        add 9 to both sides

 

4x^2  =   9            divide both sides by 4

 

x^2  =   9 / 4          take both roots

 

x  = ± √ [9 / 4]  =  ± 3 / 2

 

 

cool cool cool

CPhill  Oct 17, 2017

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