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a^{2}+\frac{1}{2}ab-\frac{2}{5}b^{2}-b^{2}+\frac{3}{7}a^{2}-2ab+\frac{7}{5}b^{2}+\frac{3}{2}ab-\frac{10}{7}a^{2}
Para calcular o oposto de b^{2}-\frac{3}{7}a^{2}+2ab, calcule o oposto de cada termo.
a^{2}+\frac{1}{2}ab-\frac{7}{5}b^{2}+\frac{3}{7}a^{2}-2ab+\frac{7}{5}b^{2}+\frac{3}{2}ab-\frac{10}{7}a^{2}
Combine -\frac{2}{5}b^{2} e -b^{2} para obter -\frac{7}{5}b^{2}.
\frac{10}{7}a^{2}+\frac{1}{2}ab-\frac{7}{5}b^{2}-2ab+\frac{7}{5}b^{2}+\frac{3}{2}ab-\frac{10}{7}a^{2}
Combine a^{2} e \frac{3}{7}a^{2} para obter \frac{10}{7}a^{2}.
\frac{10}{7}a^{2}-\frac{3}{2}ab-\frac{7}{5}b^{2}+\frac{7}{5}b^{2}+\frac{3}{2}ab-\frac{10}{7}a^{2}
Combine \frac{1}{2}ab e -2ab para obter -\frac{3}{2}ab.
\frac{10}{7}a^{2}-\frac{3}{2}ab+\frac{3}{2}ab-\frac{10}{7}a^{2}
Combine -\frac{7}{5}b^{2} e \frac{7}{5}b^{2} para obter 0.
\frac{10}{7}a^{2}-\frac{10}{7}a^{2}
Combine -\frac{3}{2}ab e \frac{3}{2}ab para obter 0.
0
Combine \frac{10}{7}a^{2} e -\frac{10}{7}a^{2} para obter 0.
\frac{70a^{2}+35ab-28b^{2}-10\left(7b^{2}-3a^{2}+14ab\right)+98b^{2}+105ab-100a^{2}}{70}
Decomponha \frac{1}{70}.
0
Simplifique.