Answer:
its a.
(y^3+3)
Explanation:
common sense
6z ^ 4-4 is a factor
Given data
6z ^ 4 - 4 + 9(y ^ 3 + 3)
open bracket
6z ^ 4 - 4 + 9y ^ 3 + 27
collect like terms
6z ^ 4+9y^3 - 4 +27
6z ^ 4+9y^3 - 23
From the above expression 6z ^ 4-4
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