Question

calculati:
a) $\frac{ 3^{-4} }{ 3^{-7} }$ =
b) $5^{-11}$ · $5^{9}$ =
c) $( \frac{3}{11} )^{2}$ · $( \frac{1}{11}) ^{-3}$ =
d) $6^{2}$ · $24^{-2}$ =

Answer 1

a) 3³ = 27
b) 5⁻² = 1/25 = 0,4
c) 9/11⁻¹ = 9ₓ11 = 99
d 2²ₓ2⁻⁶ₓ3⁻² = 2⁻⁴ₓ3⁻² = 1/16 ₓ1/9 = 1/144