(21/19)^4 x (19/7)^4
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Answered by
15
(21/19)⁴(19/7)⁴
= (21/19)(21/19)(21/19)(21/19)(19/7)(19/7)(19/7)(19/7)
= (21/7)⁴
= 3⁴
= 81
= (21/19)(21/19)(21/19)(21/19)(19/7)(19/7)(19/7)(19/7)
= (21/7)⁴
= 3⁴
= 81
Answered by
7
(21/19)⁴×(19/7)⁴
comm 19
(21/7)⁴
(3)⁴=3×3×3×3
81
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