oblicz;
(√81-√64)·√5¹/₁₆=
√1,21+√3¹/₆
-------------------------=
√2,56-√1⁹/₁₆
(5√0,09-3√0,04)·(2√2¼-3√1⁷/₉)=
∛3³/₈·∛0,125:(∛64:∛⁸/₂₇)=
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1) √81+√64+√5¹/₁₆= 9+8+√⁸¹/₁₆=17+⁹/₄= 17⁹/₄=19,25
2) nie umiem
3) (5√0,09 - 3√0,04) * (2√2¼ - 3√1⁷/₉)=
= (5*0,3 - 3* 0,2) * (2* ³/₂ - 3 * ⁴/₃) =
= (1,5 - 0,6) * (3-4) =
= 0,9 * (-1) = -0,9 = - ⁹/₁₀
4) ∛3³/₈ * ∛0,125 ÷ (∛64 ÷ ∛⁸/₂₇) =
= ∛²⁷/₈ * 0,5 : (4 : ²/₃)=
= ³/₂ * ¹/₂ : (4 * ³/₂)=
= ³/₄ : 6 = ³/₄ * ¹/₆ = ¹/₈