Question

cele 2 ex plz dau coroana​

Answer 1

Răspuns:

·

Explicație pas cu pas:

a=[(2⁸)³:(2⁶+2⁶):8-8⁶:4⁵:16]:2¹²+2=[2²⁴:(2·2⁶):2³-(2³)⁶:(2²)⁵:2⁴]:2¹²+2=[2²⁴:2⁷:2³-2¹⁸:2¹⁰:2⁴]:2¹²+2=[2²⁴⁻⁷⁻³-2¹⁸⁻¹⁰⁻⁴]:2¹²+2=[2¹⁴-2⁴]:2¹²+2=2¹⁴:2¹²-2⁴:2¹²+2=2²- 1/2⁸ +2=6 - 1/256

b=3⁴⁶:[9²²+3²⁰·27⁸+9³⁰:81⁴]-2²³:(2²²+2²²)=3⁴⁶:[(3²)²²+3²⁰·(3³)⁸+(3²)³⁰:(3⁴)⁴]- 2²³:(2·2²²)=3⁴⁶:[3⁴⁴+3²⁰·3²⁴+3⁶⁰:3¹⁶]-2²³:2²³=3⁴⁶:[3⁴⁴+3⁴⁴+3⁴⁴]-1=3⁴⁶:[3·3⁴⁴]-1=3⁴⁶:3⁴⁵-1=3-1=2

Deci a>b.

Ex7

a) (3²·5ⁿ+4²·5ⁿ):5ⁿ⁺²=5ⁿ·(3²+4²)·:5ⁿ⁺²=5ⁿ·25:5ⁿ⁺2=5ⁿ·5²:5ⁿ⁺2=5ⁿ⁺²:5ⁿ⁺²=1.

b) 18·7ⁿ-11·7ⁿ=7ⁿ·(18-11)=7ⁿ·7=7ⁿ⁺¹