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Beautiful_Lier96
 2 years ago
can someone check my work?
solve √(2x1)=x8
i came up with x=13 x=5. may i ask which one it is ?
Beautiful_Lier96
 2 years ago
can someone check my work? solve √(2x1)=x8 i came up with x=13 x=5. may i ask which one it is ?

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hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1if you put back x=5 you'll get \(\sqrt{9} =3 \) which isn't true...its just +3 and not 3

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1the reason you got 2 values instead of one is that you might have squared both sides of that equation. this adds/attaches one more root to the equation which may not satisfy the original equation.

Beautiful_Lier96
 2 years ago
Best ResponseYou've already chosen the best response.0oooh. thanks :) i understand now. i did square both sides because i did not understand which property to do..

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1ok, welcome ^_^ glad i could help :)
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