А) (3x+y)²-(2x-3y)²=(3x+y-2x+3y)(3x+y+2x-3y)=(x+4y)(5x-2y)
б) (4x+3y)²-(3x-4y)²=(4x+3y-3x+4y)(4x+3y+3x-4y)=(x+7y)(7x-y)
в) (5x-2y)²-(2x-y)²=(5x-2y-2x+y)(5x-2y+2x-y)=(3x-y)(7x-3y)
г) (2x-4y)²-(5x+y)²=(2x-4y-5x-y)(2x-4y+5x+y)=-(3x+5y)(7x-3y)
д) (2x²-y)²-x⁴=(2x²-y-x²)(2x²-y+x²)=(x²-y)(3x²-y)
е) (x²-2y)²-y⁴=(x²-2y-y²)(x²-2y+y²)
ж) (3x²-2y)²-4x⁴=(3x²-2y-2x²)(3x²-2y+2x²)=(x²-2y)(5x²-2y)
з) (4x²+3y)²-9y⁴=(4x²+3y-3y²)(4x²+3y+3y²)