Question

Ajutor va rog la 2 si 3 dar 3 fara b

Answer 1

2. a) [9¹⁸÷(27⁹×3⁷)-4¹⁰⁰÷8⁶⁶]÷5-17⁰

= [3³⁶÷(3²⁷×3⁷)-2²⁰⁰÷2¹⁹⁸]÷5-1

= (3³⁶÷3³⁴-2²)÷5-1

= (3²-2²)÷5-1

= (9-4)÷5-1

= 5÷5-1 = 1-1=0

b) (3³²⁴×5⁴³³)÷(3³²²×5⁴³²)=3²×5=9×5=45

3. a) 1768+1768×1769-1770×1766

n=1768 => n+1=1769; n+2=1770; n-4=1766

n+n(n+1)-(n+4)(n-4)

= n+n²+n-(n²-16)

= n+n²+n-n²+16

= 2n+16 = 2×1768+16=3536+16=3552