Odpowiedzi

2009-10-25T22:58:53+01:00
znak / to kreska ułamkowa twoje działanie=[16/9 :[4/3]³]⁻²+1×[7/3]⁻¹=[16/9:64/27]⁻²+1×3/7=[16/9×27/64]⁻²+3/7=[¾]⁻²+3/7=16/9+3/7=112/63+27/63=139/63=2całe i 13/63
2009-10-25T23:00:11+01:00
[(¾)⁻² : (1⅓ )³ ]⁻² +(3⅓ )⁰ x (2⅓ )⁻¹ = 1 / [ 1 / (¾)² : (⁴/₃)³ ]² + 1 x ³/₇ = 1 / [ (¹⁶/₉) : (⁶⁴/₂₇)]² + ³/₇ = 1 / [ (¹⁶/₉) x (²⁷/₆₄)]² + ³/₇ = 1 / [ (¹/₁) x (³/₄)]² + ³/₇ = 1 : (⁹/₁₆) + ³/₇ = ¹⁶/₉ + ³/₇ = ¹¹²/₆₃ + ²⁷/₆₃ = ¹³⁹/₆₃ = 2 ¹³/₆₃ ≈ 2,206