Answer:
㏑ [a² / y^4]
Explanation:
2 ㏑a = ㏑ a²
4 ㏑ y = ㏑ y^4
so, 2 ㏑ a - 4 ㏑ y
= ㏑a² - ㏑y^4
= ㏑ [a² / y^4]
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