1.

Somebody plz help plz plzz plzz ​

Answer»

-step explanation:to know the excess, SUBTRACT EQN 1 from 23a³ - 5a + 7 - (5a³ + 9 - 3a²)3a³ - 5a + 7 - 5a³ - 9 + 3a²- 2a³ + 3a² - 5a - 2



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