Question

Please help me and we should use laws of exponents​

Answer 1

3.b

`((8)/(3))^(2x+1) *((8)/(3))^(5) =((8)/(3)) ^(x+2)\\\\((8)/(3))^(2x+1 +5) =((8)/(3)) ^(x+2)\\\\\\2x +6 = x+2\\x = -4`

i hope question 3.a. is 5^x ÷ 5^-3 = 5^5

3.a.

`(5^x)/(5^(-3)) = 5^5\\\\5^ {x+3} = 5^5\\\\x+3 = 5\\x =2`