1)b(1+4b+4b^2)=4b^3+4b^2+b
2)64m^2-16mn+n^2-64m^2= n^2-16mn
3)b^2+4b-b-2=b^2+3b-2
4)25c^2-36d^2-25c^2=26d^2
5)49m^2-100n^2-100n^2=49m^2-200n^2
6)5c(c^2-9)=5c^3-45c
7)9b^2-1-b^2+25=8b^2=24
8)m^2+6mn+9n^2+m^2-9n^2=2m^2+6mn
1)b(1+4b+4b^2)=4b^3+4b^2+b
2)64m^2-16mn+n^2-64m^2= n^2-16mn
3)b^2+4b-b-2=b^2+3b-2
4)25c^2-36d^2-25c^2=26d^2
5)49m^2-100n^2-100n^2=49m^2-200n^2
6)5c(c^2-9)=5c^3-45c
7)9b^2-1-b^2+25=8b^2=24
8)m^2+6mn+9n^2+m^2-9n^2=2m^2+6mn