1)(2а+4)^2(2а-4)= 2)(с-3m)^2(3m+c)^2= 3)(a+2b)^2(2a-b)^2= 4)(a+c-5)(a-c+5)= 5)(X-a+8)(X+a-8)=

1) (2а+4)^2(2а-4)=((2a)^2+2*2a*4+4^2)*(2а-4)=(4a^2+16a+16)*(2а-4)=8a^3-16a^2+32a^2-64a+32a-64=8a^3+16a^2-32a-642) (с-3m)^2(3m+c)^2=((c-3m)(c+3m))^2=(c^2-9m^2)^2=c^4-18c^2m^2+81m^43)(a+2b)^2(2a-b)^2=(a^2+4ab+4b^2)(4a^2-4ab+b^2)=4a^4-4a^3b+a^2b^2+16a^3b-16a^2b^2+4ab^3+16a^2b^2-16ab^3+4b^4=4a^4+12a^3b+a^2b^2+16a^3b-12ab^3+4b^44)(a+c-5)(a-c+5)=(a+(c-5))(a-(c-5))=a^2-(c-5)^2=a^2-c^2+10c-255)(X-a+8)(X+a-8)=(X-(a-8))(X+(a-8))=X^2-(a-8)^2=X^2-a^2+16a-64