Question

de rezolvat primile 2 colonițe vă rog repede​

Answer 1

Răspuns:

Explicație pas cu pas:

La primul exercitiu:

a) 2⁴·4⁵·8³=2⁴·(2²)⁵·(2³)³=2⁴·2¹⁰·2⁹=2²³

b) 4³·2⁵·8⁷=(2²)³·2⁵·(2³)⁷=2⁶·2⁵·2²¹=2³²

c) 3⁸·9⁶:27²= 3⁸·(3²)⁶:(3³)²= 3⁸·3¹²:3⁶=3²⁰:3⁶=3¹⁴

e) 125¹² :5⁶:25⁴=(5³)¹² :5⁶:(5²)⁴=5³⁶:5⁶:5⁸=5³⁰:5⁸=5²²

g) 50¹³:10¹³·25⁴=(5¹³·10¹³):10¹³·(5²)⁴=5¹³·5⁸=5²¹

f) 18¹¹:9¹¹·4⁵=(2¹¹ 9¹¹):9¹¹·4⁵=2¹¹·(2²)⁵=2¹¹·2¹⁰=2²¹

La al doilea exercitiu

a) 2²³·4¹⁵=2²³·(2²)¹⁵=2²³·2³⁰=2⁵³

b) 4³⁷:2³¹=(2²)³⁷:2³¹=2⁷⁴:2³¹=2⁴³

c) 4²²·8¹⁵=(2²)²²·(2³)¹⁵=2⁴⁴·2⁴⁵=2⁸⁹

e) 16⁸:8⁴=(2⁴)⁸:(2³)⁴=2³²:2³²=2⁰=1

f) (2¹⁸ 4³⁰):8⁵=[(2¹⁸ (2²)³⁰]:8⁵=2¹⁸ 2⁶⁰:(2³)⁵=2⁷⁸:2¹⁵=2⁶³

g) (2¹⁵·8⁵)²:4²⁰=[2¹⁵·(2³)⁵]²:(2²)²⁰=(2¹⁵·2¹⁵)²:2⁴⁰=(2³⁰)²:2⁴⁰=2⁶⁰:2⁴⁰=2²⁰