Question

efectuati folosind factorul comun a) 3x4+3x15 b)20x48+20x2 c)28x521-28x21 d)23x718-162x23 e)15x38+15x162 f)702x65+35x702 g)2413x1001-2413 h)2029x599+2029 i)1289x337+1289x663

Answer 1

a)3(4+15)=3×19=57
b)20(48+2)=20×50=1000
c)28(521-21)=28×500=14000
d)23(718-162)=23×555=12765
e)15(38+162)=15×200=3000
f)702(65+35)=702×100=70200
g)2413(1001-1)=2413×1000=2413000
h)2029(599+1)=2029×600=1217400
i)1289(337+663)=1289×1000=1288000