Question

Calculati folosind factorul comun:98+98×99-100×97;37×41+41×13-41×50; 105+105×6+105×3-210; 54×15×9+54×15-54×50; sa ma ajutr si pe mine cineva va rog mult.

Answer 1

98+98×99-100×97=98x(1+99)-100x97=98x100-97x100=100x(98-97)=10037×41+41×13-41×50 =41x(37+13-50)=41x0=0
105+105×6+105×3-210=105x(1+6+3)-210=105x10-210=1050-210=84054×15×9+54×15-54×50=54x(15x9+15-50)=54x100=5400