Разложите на множители :
1) а(b-c)-3(b-c)=
2) ab-bc=
3) 3х-3y-ax+ay=
4) [tex] 9(a^{2} -b)-c ^{2}(b-a)
[/tex]
5) [tex]3 a^{2} -3b ^{2} -a+b [/tex]
1) а(b-c)-3(b-c)=
2) ab-bc=
3) 3х-3y-ax+ay=
4) [tex] 9(a^{2} -b)-c ^{2}(b-a)
[/tex]
5) [tex]3 a^{2} -3b ^{2} -a+b [/tex]
Answers & Comments
2) ab-bc=b(a-c)
3) 3х-3y-ax+ay=
=3(x-y)-a(x-y)=(x-y)(3-a)