Respostas

2013-08-01T15:31:20-03:00
3ab-6a^{2}+a^{2}-4ab+2b^{2}+5a^{2}-3b^{2}\\\\
-6a^{2}+a^{2}+5a^{2}-3b^{2}+2b^{2}+3ab-4ab\\\\
b^{2}-ab\\\\
\Longrightarrow(3ab-6a^{2})+(a^{2}-4ab+2b^{2})+(5a^{2}-3b^{2})=b^{2}-ab
4 4 4
brigadãooo arthur ajufou muuito