Запишіть у вигляді многочлена вираз:1)(x^3-2y)(x^3+2y) 2)(3y-4y^2)(3y+1y^2) 3)(5b-3ac)(3ac+5b) 4) (-4m^2n+n^3)(-4m^2n-n^3) 5) (7x^2y^2+6xy)(-7x^2y^2+6xy) 6) (9a^4-5b^3c)(5b^3c+9a^4) 7) (-2y^5z^2-3y^3z^4)(-2y^5z^2-3y^3z^4) 8) (-0,3x^3+2yx)(0,3x^3+2yx) 9) (-1,5a^2+4ab^3)(-1,5a^2-4ab^3) плиз
1.2x^6+2x^3y-2x^3y-4y^2=2x^6-4y^2 2.9y^2+3y^3-12y^3-4y^4=9y^2-9y^3-4y^4 3.25b^2-9a^2c^2 4.16m^4n-2n^6 5.-14x^4y^4+12x^2y^2 6.81a^8-25b^6c^2 7.4y^10z^4+6y^3z^8 8.0.9x^6+4x^2y^2 9.2.25a^4-16a^2b^6