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2*2^-3 *16 = 2^1 *2^-3 *2^4 = 2 ^ (1-3+4) = 1^2 = 1
b)
9*3^-3*27 ^-2 = 3^2 * 3^-3 *(3^3)^-2 = 3^2 * 3^-3 *3^-6 = 3^(2-3-6) = 3^-7 = (1/3)^7
c)
2√2*2*4^-1=2 * 2^(1/2) *2 *(2^2)-1 = 2 * 2^(1/2) *2 * 2^-2 = 2^(1+1/2+1-2) =2^1/2 = √2
d)
3√3*1/3*9^-3=3 * 3^(1/2) * (3^2)^-3 - 3= 3 * 3^(1/2) * 3^-6 - 3 = 3^(1+1/2 -6-1) = 3^(-5,5)