whats the solution?

 

whats the solution? x^2-55=9  

 

 

                                           x² – 55  =  9  

 

Add 55 to both sides      x² – 55 + 55  =  9 + 55  

 

                                                   x²  =  64 

 

Take square root of both sides         x  =  + 8      

 

That's read as "x equals plus or minus eight"  

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