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\frac{7}{5}x^{2}a+\left(a-\frac{13}{5}a\right)\left(\frac{7}{8}x^{2}-x^{2}\right)
Combineu x^{2} i \frac{2}{5}x^{2} per obtenir \frac{7}{5}x^{2}.
\frac{7}{5}x^{2}a-\frac{8}{5}a\left(\frac{7}{8}x^{2}-x^{2}\right)
Combineu a i -\frac{13}{5}a per obtenir -\frac{8}{5}a.
\frac{7}{5}x^{2}a-\frac{8}{5}a\left(-\frac{1}{8}\right)x^{2}
Combineu \frac{7}{8}x^{2} i -x^{2} per obtenir -\frac{1}{8}x^{2}.
\frac{7}{5}x^{2}a+\frac{1}{5}ax^{2}
Multipliqueu -\frac{8}{5} per -\frac{1}{8} per obtenir \frac{1}{5}.
\frac{8}{5}x^{2}a
Combineu \frac{7}{5}x^{2}a i \frac{1}{5}ax^{2} per obtenir \frac{8}{5}x^{2}a.
\frac{7}{5}x^{2}a+\left(a-\frac{13}{5}a\right)\left(\frac{7}{8}x^{2}-x^{2}\right)
Combineu x^{2} i \frac{2}{5}x^{2} per obtenir \frac{7}{5}x^{2}.
\frac{7}{5}x^{2}a-\frac{8}{5}a\left(\frac{7}{8}x^{2}-x^{2}\right)
Combineu a i -\frac{13}{5}a per obtenir -\frac{8}{5}a.
\frac{7}{5}x^{2}a-\frac{8}{5}a\left(-\frac{1}{8}\right)x^{2}
Combineu \frac{7}{8}x^{2} i -x^{2} per obtenir -\frac{1}{8}x^{2}.
\frac{7}{5}x^{2}a+\frac{1}{5}ax^{2}
Multipliqueu -\frac{8}{5} per -\frac{1}{8} per obtenir \frac{1}{5}.
\frac{8}{5}x^{2}a
Combineu \frac{7}{5}x^{2}a i \frac{1}{5}ax^{2} per obtenir \frac{8}{5}x^{2}a.