bx-by+px-py = b(x-y) +p(x-y) = (b+p)(x-y)
3a+ba+3m+bm= a(3+b)+m(3+b) =(a+m)(3+b)
(d+4)во второй степени-25 = ((d+4)-5)((d+4)+5) = (d+4-5)(d+4+5)=(d-1)(d+9)
64p.во второй степени-(5p-2)во второй степени = (8p -(5p-2))(8p+(5p-2)) = (8p-5p+2)(8p+5p-2) = (3p+2)(13p-2)
mx+nx+cx+am+an+ac = x(m+n+c)+a(m+n+c)=(x+a)(m+n+c)