Odpowiedzi

2009-10-28T10:20:57+01:00
(2¹⁹+2¹⁸)×3²÷(2¹⁸+2¹⁷)×3³=2³⁷×3²:2³⁵×3³=2²×3⁻¹=4×⅓=1⅓

((1½)⁻¹ - 3⁻²)⁻²=(⅔-1/9)⁻²=(6/9-1/9)⁻²=(5/9)⁻²=81/25=3 i 6/26
2009-10-28T12:24:10+01:00
1]=[2²¹]¹⁸×3²:[2²⁰]¹⁷×3³=2³⁷⁸×3⁵:2³⁴⁰=2⁷¹⁸×3⁵ 2]=[ [3/2]⁻¹-3⁻²]⁻²=[⅔-1/3²]⁻²=[⅔-1/9]⁻¹=[5/9]⁻¹=9/5