Question 169984


{{{x^2+5=13}}} Start with the given equation.



{{{x^2=13-5}}}Subtract {{{5}}} from both sides.



{{{x^2=8}}} Combine like terms.



{{{x=0+-sqrt(8)}}} Take the square root of both sides.



{{{x=sqrt(8)}}} or {{{x=-sqrt(8)}}} Break up the "plus/minus" to form two equations.



{{{x=2*sqrt(2)}}} or {{{x=-2*sqrt(2)}}}  Simplify the square root.




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Answer:



So the solutions are {{{x=2*sqrt(2)}}} or {{{x=-2*sqrt(2)}}}.