(n-3)(n-10)=?
(5a^2-2x^3)(2x^3+5a^2)=?
25-x^2=?
1-6c^2+9c^4=?
m^4+2m ^2n^3+n6=?
1+y^2-2y=?
28xy+49x^2+4y^2=?
4x^2+12x+9=?
16-49y^2=?
4x^2-1=?
8+a^3=?
a^2-6ab+9b^2=?
9z^2-25=?
y^6+2y^3+1=?
a (3a^2+a)=?