(25-5y^4+y^3)(5+y^4)+a^10(1-a)^2=упрастите

Question

(25-5y^4+y^3)(5+y^4)+a^10(1-a)^2=упрастите

Answer 1

=100-25y^4+5y^3+25y^4-5y^8+y^7+

Answer 2

Упростите*) ))))))))))))))))