1. Rozwiąż nierówność.
2. Podaj liczbę odwrotną do liczby:
Zad.1
(3-x)²-2(x+3)≤(x-2)²-3(2x-1)
9+x²-6x-2x-6≤x²+4-4x-6x+3
x²-8x+3≤x²-10x+7
-8x+3≤-10x+7
2x≤4
x≤2
x∈(-∞;2>
Zad.2
-²/₅+1,5·²/₇=-²/₅+²¹/₁₄·⁴/₁₄=-²/₅+⁸⁴/₁₉₆=-²/₅+³/₇=-¹⁴/₃₅+¹⁵/₃₅=¹/₃₅
Liczba odwrotna: 35.
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Zad.1
(3-x)²-2(x+3)≤(x-2)²-3(2x-1)
9+x²-6x-2x-6≤x²+4-4x-6x+3
x²-8x+3≤x²-10x+7
-8x+3≤-10x+7
2x≤4
x≤2
x∈(-∞;2>
Zad.2
-²/₅+1,5·²/₇=-²/₅+²¹/₁₄·⁴/₁₄=-²/₅+⁸⁴/₁₉₆=-²/₅+³/₇=-¹⁴/₃₅+¹⁵/₃₅=¹/₃₅
Liczba odwrotna: 35.