Sagot :
Réponse :
bonsoir,
(-4)³ - 2×(3² - 2³)⁴
= -64 - 2× ( 9 - 8)⁴
= -64 - 2×1⁴
= -64 - 2
= -66
5⁻² - 2 × ( 3² + 1⁵ ) ⁻³
= 1/5² - 2 × ( 9 + 1 ) ⁻³
= 1/25 - 2× 10 ⁻³
= 1/25 - 2 × 1/10³
= 1/25 - 2/10³
= 1/25 - 2/1000
= 1×20/25×20 - 2÷2/1000÷2
= 20/500 - 1/500
= 19/500
4⁻³ + 6⁻³ + 12⁻¹
= 1/4³ + 1/6³ + 1/12¹
=1/64 + 1/216 + 1/12
= 179/1728
voila :)
(-4)^3-2×(3^2-2^3)^4
=-64-2×(9-8)^4
=-64-2×(+1)^4
=-64-2×1
=-64-2
=-66
5^-2-2×(3^2+1^5)^(-3)
=1/5^2-2×(9+1)^(-3)
=1/25-2×(+10)^(-3)
=0,04-2×1/10^3
=0,04-2×0,001
=0,04-0,002
=0,038
4^-3+6^-3+12^-1
=1/4^3+1/6^3+1/12^1
=1/64+1/216+1/12
=(27+8+144)/1728
=179/1728