ài 34: Tính hợp lý: a) (0,25)^3cdot 32 b) (-0,125)^380^4 c) (8^2cdot 4^5)/(2^20) d) (81^11cdot 3^17)/(27^10)cdot 9^(15)

a) $(0,25)^{3}\cdot 32 = 0.25^3 \times 32 = 0.015625 \times 32 = 0.5$<br />b) $(-0,125)^{3}80^{4} = (-0.125)^3 \times 80^4 = (-0.125)^3 \times (80^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-0.125)^3 \times (10^4 \times 8^4) = (-