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Problemi Simili mit-Tiftix tal-Web

Sehem

-2b^{2}+5a^{2}+0.6b^{2}
Ikkombina 6ab u -6ba biex tikseb 0.
-1.4b^{2}+5a^{2}
Ikkombina -2b^{2} u 0.6b^{2} biex tikseb -1.4b^{2}.