Question

please answer these all​

Answer 1

81=3^4

16=2^4

(81/16)^-3/4

=(3/2)^-3

=(2/3)^3

=8/27

25=5^2

9=3^2

(25/9)^-3/2=(5/3)-3

=(3/5)^3=27/125

(3/2)^-3=(2/3)^3

=8/27

8/27*27/125*27/8=27/125

4^2x=1/2^5

2^4x=2^-5

4x=-5

x=-5/4(or)-1.25

5^2x+3=5^0

2x+3=0

2x=-3

x=-3/2

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Answer 2

Answer:

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