Выражение 1) (4x-3)(8x+6) 2) (6x+4)(2-3x) 3) 2y(y^2-1)(2+y) 4) x^2(x-3)(2+x^2)

1) (4x-3)(8x+6) = 32x^2+24x-24x-18 = 32x^2-18
2) (6x+4)(2-3x) = 12x-18x^2+8-12x = -18x^2+8
3) 2y(y^2-1)(2+y) = 2y(2y^2+y^3-2-y) = 4y^3+2y^4-4y-2y^2
4) x^2(x-3)(2+x^2) = x^2(2x+x^3-6-3x^2) = 2x^3+x^6-6x^2-3x^4