Question

(7a3-4a2-5)-(-2a3+5a2-6)+(6a3-7)​

Answer 1

Answer:

11a3-9a2-6

Step-by-step explanation:

7a3-4a2-5-2a3-5a2+6+6a3-7

7a3-2a3+6a3-4a2-5a2-5+6-7

11a3-9a2-6

Answer 2

Step-by-step explanation:

(7a³-4a²-5)-(-2a³+5a²-6)+(6a³-7)

--> 7a³-4a²-5+2a³-5a²+6+6a³-7

--> 7a³+2a³+6a³-4a²-5a²-5-7

--> 15a³-9a²-6

Hope it will help u...