Question

exercitiul 39 rezolvarea prin factorul comun

Answer 1

a)3757×26+3757×75-3757=
3757×(26+75-1)=
3757×102
383214
b)4756×34-4756+4756×67=
4756×(34-1+67)=
4756×100=
475600
c)2432×17-2432×16-2432=
2432×(17-16-1)=
2431×0=
0
d)158×432+158×68-158×400=
158×(432+68-400)=
158×100=
15800
e)2300×28-28×2299-28=
28×(2300-2299-1)=
28×0=
0
f)1245×200+100×1245-1245×290=
1245×(200+100-290)=
1245×10=
12450
sper ca te-am ajutata......coroana?