a )
b)
Proszę o pomoc :)
x- mnożenie
(2⁻⁴:2⁻⁶)⁻¹-(2⁻⁴-2⁻³)⁻¹=
(2²)⁻¹-(¹/₁₆-¹/₈)⁻¹=
4⁻¹-(-¹/₁₆)⁻¹=
4⁻¹-(-16)=¼+16=16¼
(0,5×8⁶-2×16⁴):7³=
[(½×(2³)⁶-2×(2⁴)⁴]:7³=
(2⁻¹×2¹⁸-2×2¹⁶):7³=
(2¹⁷-2¹⁷):7³=
0:7³=0
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(2⁻⁴:2⁻⁶)⁻¹-(2⁻⁴-2⁻³)⁻¹=
(2²)⁻¹-(¹/₁₆-¹/₈)⁻¹=
4⁻¹-(-¹/₁₆)⁻¹=
4⁻¹-(-16)=¼+16=16¼
(0,5×8⁶-2×16⁴):7³=
[(½×(2³)⁶-2×(2⁴)⁴]:7³=
(2⁻¹×2¹⁸-2×2¹⁶):7³=
(2¹⁷-2¹⁷):7³=
0:7³=0