(a+b)^2-(a-b)^2 (m+4)^2-4(m+1)^2
(3a^2+4b)^2
(5x-2y)^2-9y^2
(1.3p^2+2.5q)^2
(5-x)(5+x)(25-x^2)
(3x^4-2a^6)^2
(4p-q)^2-(2p+3q)^2
(4a-b)^2-(2a+3b)^2
(y+6)^2-(y+5)y(-5)

islamovkasymzh1    3   02.02.2021 15:45    0