НОМЕР 443. Помогите, многочлены.

Решите задачу:

$\boxed{\ (A-B)(A+B)=A^2-B^2\ }\\\\\\(5+m^2)(m^2-5)=(m^2-5)(m^2+5)=m^4-25\\\\(7n^3-q^2)(q^2+7n^3)=(7n^3-qa^2)(7n^3+q^2)=49n^6-q^4\\\\(0,8x-y^8)(y^8+0,8x)=(0,8x-y^8)(0,8x+y^8)=0,64x^2-y^{16}\\\\\Big(\dfrac{8}{x^2}-\dfrac{y^3}{5}\Big)\Big(\dfrac{y^3}{5}+\dfrac{8}{x^2}\Big)=\dfrac{64}{x^4}-\dfrac{y^6}{25}\\\\\\(0,5a^2b-0,4ab^2)(0,5a^2b+0,4ab^2)=0,25a^4b^2-0,16a^2b^4\\\\\Big(1,1t^7-\dfrac{3}{4}\, p^3\Big)\Big(\dfrac{3}{4}\, p^3+1,1t^7\Big)=1,21t^{14}-\dfrac{9}{16}\, p^{6}$