Question

(21/19)^4×(19/7)^4 plss explain it​

Answer 1

Answer:

[ 133/21 ] ^4

Step-by-step explanation:

Using the exponential rule, a^m x b^m, given that the exponential power are same, but number different, we multiply 21/19 and 19/7 then put the answer in bracket and write the exponent 4 outside the bracket like this:

21/9 x 19/7 = 399/63 [ simplify it by dividing by 3 ]

= 133/21

put the exponent 4 outside the bracket as the power remains same.

[ 133/21 ] ^4

Answer 2

Answer:

81

Step-by-step explanation:

by the property of (a/b)^m = a^m/b^m the numbers would become 21^4/19^4 × 19^4/ 7^4

by performing division the number obtained would be 3^4 which is equal to 81