Answer:
6/x²
Step-by-step explanation:
Rational expressions are added the same way numerical fractions are added. Their sum is the quotient of the sum of numerators, and the common denominator.
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The given fractions already have the same denominator, so we simply add their numerators.
[tex]\dfrac{2}{x^2}+\dfrac{4}{x^2}=\dfrac{2+4}{x^2}=\boxed{\dfrac{6}{x^2}}[/tex]
