1; oblicz
b)
d)
f)
2. wykonaj działania.
g)
h)
daję naj
1b]
[(2-¹/₇)×3]/(2+0,6)=(¹³/₇×3)/(¹³/₅)=³⁹/₇×⁵/₁₃=¹⁵/₇=2¹/₇
d]
(2×⅚)x²-(3x²-√(1⁷/₉)=⁵/₃x²-3x²+⁴/₃=- ⁴/₃x²+⁴/₃=-1⅓x²+1⅓=1⅓(1-x²)
f]
1,6×⁷/₁₆-2,7/3x³=0,7-0,9/x³=(7x³-9)/10x³
2g]
-1¾+7⅕=-⁷/₄+³⁶/₅=-³⁵/₂₀+¹⁴⁴/₂₀=¹⁰⁹/₂₀=5,45
h]
-2⅜-¹/₁₂=-2⁹/₂₄-²/₂₄=-2 ¹¹/₄
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1b]
[(2-¹/₇)×3]/(2+0,6)=(¹³/₇×3)/(¹³/₅)=³⁹/₇×⁵/₁₃=¹⁵/₇=2¹/₇
d]
(2×⅚)x²-(3x²-√(1⁷/₉)=⁵/₃x²-3x²+⁴/₃=- ⁴/₃x²+⁴/₃=-1⅓x²+1⅓=1⅓(1-x²)
f]
1,6×⁷/₁₆-2,7/3x³=0,7-0,9/x³=(7x³-9)/10x³
2g]
-1¾+7⅕=-⁷/₄+³⁶/₅=-³⁵/₂₀+¹⁴⁴/₂₀=¹⁰⁹/₂₀=5,45
h]
-2⅜-¹/₁₂=-2⁹/₂₄-²/₂₄=-2 ¹¹/₄