(3м-2)(2+3м)-3м(3м-2)+(м-2)=
=9м^2-9m^2+m-2=
=m-2=-2,5
a^2-6a+9+4a^2-9-4a^2+10a=
=a^2-4a=-0,25+2=1,75
4x^2-12xy+9y^2-49x^2-56xy-16y^2+68xy+17x^2=
=-7^2-28x^2
b) (3m-2)*2+(m-2)^2=6m-4+m^2-4m+4=m^2+2m=m(m+2)
-0,5*1,5=-0,75
c) a^2-6a+9+4a^2-9-4a^2+10a=a^2-4a
0,25-2=-1,75
d)4x^2-12xy+9y^2-(49x^2+56xy+16y^2)+17x^2+68xy=-28x^2-7y^2=-7(4x^2+y^2)
(3м-2)(2+3м)-3м(3м-2)+(м-2)=
=9м^2-9m^2+m-2=
=m-2=-2,5
a^2-6a+9+4a^2-9-4a^2+10a=
=a^2-4a=-0,25+2=1,75
4x^2-12xy+9y^2-49x^2-56xy-16y^2+68xy+17x^2=
=-7^2-28x^2
b) (3m-2)*2+(m-2)^2=6m-4+m^2-4m+4=m^2+2m=m(m+2)
-0,5*1,5=-0,75
c) a^2-6a+9+4a^2-9-4a^2+10a=a^2-4a
0,25-2=-1,75
d)4x^2-12xy+9y^2-(49x^2+56xy+16y^2)+17x^2+68xy=-28x^2-7y^2=-7(4x^2+y^2)