Question 210204

{{{2x^2=98}}} Start with the given equation.



{{{x^2=(98)/(2)}}} Divide both sides by {{{2}}}.



{{{x^2=49}}} Reduce.



{{{x=""+-sqrt(49)}}} Take the square root of both sides.



{{{x=sqrt(49)}}} or {{{x=-sqrt(49)}}} Break up the "plus/minus" to form two equations.



{{{x=7}}} or {{{x=-7}}}  Take the square root of {{{49}}} to get {{{7}}}.



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Answer:



So the solutions are {{{x=7}}} or {{{x=-7}}}.