Question

Please answer this question honestly. ​

Answer 1

Step-by-step explanation:

1) 5a²(a-2)-2a³(a+4)-5a(a-2)

5a³-10a²-2a⁴-8a³-5a²+10a

5a³-8a³-10a²-5a²-2a⁴+10a

-3a³-15a²-2a⁴+10a= -2a⁴-3a³-15a²+10a

2) (2/9)³×(2/9)-⁵

(2/9)³+(-⁵)

(2/9)-²

(9/2)²= 81/4