Scoate factor comun 5x;
a.5xy +10x;
b.10xy-15x;
c.5xyz-20xy+15x;
d.25xy+10xz+5x;
f.30x+25xy-15xz.


Răspuns :

a. 5xy +10x=5x • ( y + 2 )

b. 10xy-15x=5× • ( 2y - 3 )

c. 5xyz-20xy+15x=5x • ( yz - 4y + 3 )

d. 25xy+10xz+5x=5x • (5y + 2z + 1 )

f. 30x+25xy-15xz=5x • ( 6 + 5y - 3z )