Question

Thực hiện phép tính :

\(\frac{x^2}{2}+\frac{x^2}{3}+\frac{x^2}{4}\)

Need help

Answer 1

\(\frac{x^2}{2}+\frac{x^2}{3}+\frac{x^2}{4}\)

\(=\frac{6x^2}{12}+\frac{4x^2}{12}+\frac{3x^2}{12}\)

\(=\frac{6x^2+4x^2+3x^2}{12}\)

\(=\frac{13x^2}{12}\)

Answer 2

\(\frac{x^2}{2}+\frac{x^2}{3}+\frac{x^2}{4}\)

\(=x^2.\frac{1}{2}+x^2.\frac{1}{3}+x^2.\frac{1}{4}\)

\(=x^2.\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)\)

\(=x^2.\frac{13}{12}\)