(�-3)(�-6) +� (4)(�-2)=10

(�-3)to third power- � (�-8)(�-2)=-43
(�-6)to second power- � 4 to the second power=-20
�-9to second power- � (�-6)second power=117

1. correct

2. (-3)³=+27... so 27-16=
3. correct.
4. (-6)²=+36... so 81-36=