Question

UTILIZÂND FACTORUL COMUN, ARĂȚI CĂ:
a) 3¹⁸+3¹⁷=4×3¹⁷

b) 2²⁹+2²⁷-2²⁶=9×4¹³

c)5²⁶+5²⁵-15²⁴=29×25¹²

măcar atât, dar repede, dau coroană ✨​

Answer 1

Răspuns:

a) 3¹⁸+3¹⁷=4×3¹⁷

3¹⁷(3+1)=3¹⁷×4

3¹⁷×4=4×3¹⁷

b) 2²⁹+2²⁷-2²⁶=9×4¹³

2²⁶(2³+2¹-1)=2²⁶·(8+2-1)=(2²)¹³×9

9×4¹³=9×4¹³

c)5²⁶+5²⁵-5²⁴=29×25¹²

5²⁴(5²+5-1)=29×(5²)¹²

5²⁴×(25+5-1)=29×5²⁴

5²⁴×29=29×5²⁴