tolong jawab pake cara no. 21,22

jawab

21.
(2^(1/2))ˣ⁺³ = (2⁻²)ˣ⁺⁴

1/2 (x + 3) = - 2(x + 4) ...kalikan 2
x +3 = -4(x + 4)
x + 3 = - 4x  - 16
x  + 4x = -3 - 16
5x = - 19
x = - 19/5

22
a. 2^(-1). 2^(1/2)  . 4^(1/3) . (1/8)^(1/4). (1/2)^(1/6)=
= 2^(-1) . 2^(1/2) . 2^(2/3). (2)^(-3/4). (2)^(-1/6)
= 2^(-1 +1/2 + 2/3 - 3/4 - 1/6)
= 2^(-3/4)

b. = (1/25)^(1/3) . 5. 5^(1/2). 5^(-1). (25)^(1/4) . 5^(2). (625)^(1/6)
= 5^(-2/3) .(5)^1 , 5^(1/2). 5^(-1). 5^(1/2). 5^(2). (5^(5/6)
= (5)^(-2/3 + 1 + 1/2 - 1 + 1/2 + 2 + 5/6)
= (5)^(3¹/₆)

^(pangkat)