рррннр және қаласы бойынша мемлекеттік кірістер департаменті оңайлатылған және
Объяснение:
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=- 12ab - 2b^2+ 12ab - 18a^2 = - 2b^2 - 18a^2 = -2 *5 - 18 * 3 = - 10 - 54 = -64