Zadanie .1
a)(¼)⁵:1/2⁸=
b)(-6)⁴ * (-2)⁴
__________ =
12²
c)2⁹:(-6⁷:3⁷)=
d)32³/8²=
f)25² * 4⁷/2⁹*5⁴ +
g)2¹⁰ * 3¹⁰/6⁸
h)5⁸*2⁹/10⁷
Zad.5 str 24 Matematyka z Plusem 2 !.!
/ TO JEST KRESKA UŁAMKOWA.
Zad.2
a)2⁵:(2³*2⁰)
b)(2⁸:2⁷)³
c)1,25³*8³
Zad.3.
Liczba a jest dodatnia Zapisz jak najprościej :
a)(a³)³:a²/(a²*a)²*a
b)(a²)³*a⁵/a⁷
c)(a⁸)²:a¹⁵/a²
/----to jest kreska ułamkowa
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Daje najj ;****
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Zad.1
a)
¼⁵ : ½⁸ = ½⁶ : ½⁸ = ½ ⁶⁻⁸ = ½⁻² = 2² = 4
b)
[(-6)⁴ · (-2)⁴]:12² = [(-6)·(-2)]⁴ : 12² = 12⁴:12² = 12² = 144
c)
2⁹/ (-6)⁷:3⁷ = 2⁹/ (-6:3)⁷ = 2⁹ / (-2)⁷ = 2⁹/2⁷·(-1)⁷ = 2² · (-1) = -4
d)
32³/8² = (2⁵)³/2⁶ = 2¹⁵/2⁸ = 2¹⁵⁻⁸ = 2⁹ = 512
f)
25²·4⁷/2⁹·5⁴ = 5⁴·2¹⁴/5⁴·2⁹ = 2⁵ = 32 (5⁴ skraca się z 5⁴)
g)
2¹⁰·3¹⁰/6² = (2·3)¹⁰/6² = 6¹⁰/6² = 6⁸ = 1679616
h)
5⁸·2⁹/10⁷ = 10⁴·2⁹/10⁷ = 10⁴⁻⁷ · 2⁹ = 10⁻³ · 2⁹ = ¹/₁₀³ · 2⁹ = 2⁹/10³ = 2⁹/2³·5³ = 2⁶/5³
Zad.2
a)
2⁵:(2³·2⁰)= 2⁵/2³ = 2²=4
b)
(2⁸/2⁷)³ = 2³ =8
c)
(1,25)³ · 8³ = (⁵/₄ · 8) ³ = 10³=1000
Zad.3
a) (a³)³:a²/(a²·a)·a = a⁹:a²/a⁷ = a⁷/a⁷=1
b) (a²)³ · a⁵/a⁷ = a⁶·a⁵/a⁷ = a¹¹/a⁷ = a⁴
c) (a⁸)²:a¹⁵/a² = a¹⁶:a¹⁵/a²=a¹/a² = a⁻¹ = ¹/a