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x^2-55=9

 Apr 27, 2023
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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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 Apr 27, 2023

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