(a+3)*(a-3)= (5+d)*(5-d)=(x+1)*(1-x)=(2a+b)*(2a-b)=(a-3b)*(3b+a)=(2m-3n)*(2m+3n)= - вопрос №1622731833551122332323 от sukhovershaya 05.12.2020 16:31

Question

Алгебра: (a+3)*(a-3)= (5+d)*(5-d)=(x+1)*(1-x)=(2a+b)*(2a-b)=(a-3b)*(3b+a)=(2m-3n)*(2m+3n)=​

sukhovershaya · Answer

(a+3)•(a-3)=3а•(-2а)=-6a(5+d)•(5-d)=5d•4d=20d(x+1)•(1-x)=x•x=x(2a+b)•(2a-b)=(2a+2a)•(b-b)=4a•b(a-3b)•(3b+a)=(3b-3b)•(a+a)=b•2a(2m-3n)•(2m+3n)=(2m+2m)•(3n-3n)=4m•n...

(a+3)*(a-3)= (5+d)*(5-d)=(x+1)*(1-x)=(2a+b)*(2a-b)=(a-3b)*(3b+a)=(2m-3n)*(2m+3n)=​

(a+3)(a-3)= (5+d)(5-d)=
(x+1)(1-x)=
(2a+b)(2a-b)=
(a-3b)(3b+a)=
(2m-3n)(2m+3n)=