^表示次方
﹙-2a^2b﹚^2÷4﹙ab^2﹚
=(4a^4b^2)÷4﹙ab^2﹚
=a^(4-1)b^(2-2)
=a^3
(2)
﹙4a^3b^3c^2﹚^2÷﹙-2a^3b^2﹚^2
=(16a^6b^6c^4)÷﹙4a^6b^4﹚
=(16÷4)a^(6-6)b^(6-4)c^4
=4b^2c^4
^表示次方
﹙-2a^2b﹚^2÷4﹙ab^2﹚
=(4a^4b^2)÷4﹙ab^2﹚
=a^(4-1)b^(2-2)
=a^3
(2)
﹙4a^3b^3c^2﹚^2÷﹙-2a^3b^2﹚^2
=(16a^6b^6c^4)÷﹙4a^6b^4﹚
=(16÷4)a^(6-6)b^(6-4)c^4
=4b^2c^4