1) x-3y+x^2-9y^2 2) 9m^2+6mn+n^2-253) ab^5-b^5-ab^3+b^34) 1-x^2+10xy-25y^2решите...

Question

1) x-3y+x^2-9y^2
2) 9m^2+6mn+n^2-25
3) ab^5-b^5-ab^3+b^3
4) 1-x^2+10xy-25y^2
решите пожалуйста)

Answer 1

1)x-3y+(x-3y)*(x+3y)
(1+x+3y)*(x-3y)