Răspunsuri

2014-10-24T19:52:25+03:00
5⁴⁰ ( 5² - 5¹ - 5° ) ÷ ( 25¹⁹× 19 ) = ( 5⁴⁰ × 19 ) ÷ ( 25¹⁹ × 19 ) = 5⁴⁰ ÷ 25¹⁹ = 5⁴⁰ ÷ 5³⁸ = 5² = 25
1 5 1
2014-10-24T19:55:54+03:00
Dau factor comun 5^40
5^40(5^2-5^1-1):25^19*19
5^40*19:5^38*19=5^(40-38)=5^2