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-3a^{2}+4ab+a^{2}-2\left(a+2ab\right)
3a^{2}-4ab teskarisini topish uchun har birining teskarisini toping.
-2a^{2}+4ab-2\left(a+2ab\right)
-2a^{2} ni olish uchun -3a^{2} va a^{2} ni birlashtirish.
-2a^{2}+4ab-2a-4ab
-2 ga 1a+2ab ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-2a^{2}-2a
0 ni olish uchun 4ab va -4ab ni birlashtirish.
-3a^{2}+4ab+a^{2}-2\left(a+2ab\right)
3a^{2}-4ab teskarisini topish uchun har birining teskarisini toping.
-2a^{2}+4ab-2\left(a+2ab\right)
-2a^{2} ni olish uchun -3a^{2} va a^{2} ni birlashtirish.
-2a^{2}+4ab-2a-4ab
-2 ga 1a+2ab ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-2a^{2}-2a
0 ni olish uchun 4ab va -4ab ni birlashtirish.