Объяснение:
1.
[tex]1)\ 6*(a+b)+(a+b)^2=(a+b)*(6+a+b).\\2)\ 4*(x-y)+3*(x-y)^2=(x-y)*(3*(x-y)+4)=(x-y)*(3x-3y+4).\\3)\ (a-b)+(b-a)^2=(a-b)+(a-b)^2=(a-b)*(1+a-b).\\4)\ (a-b)^2-(b-a)=(a-b)^2+(a-b)=(a-b)*(a-b+1).[/tex]
2.
[tex]2)\ 14am-7an+8bm-4bn=7a(2m-n)+4b*(2m-n)=(2m-n)*(7a+4b).\\[/tex]
3.
[tex]2)\ 6m^2+12mn+6n^2=6*(m^2+2mn+n^2)=6*(m+n)^2=6*(56+44)^2=\\=6*100^2=6*10000=60000.\\4)\ -64a^3-8a^2b-\frac{1}{4}ab^2=- a*(64a^2+8ab+\frac{1}{4}b^2)=\\=-a*((8a)^2+2*8a*\frac{1}{2}+(\frac{1}{2}b) ^2)=-a*(8a+\frac{1}{2} b)^2=\\ =-(-6)*(8*(-6)+\frac{1}{2}*84)^2 =6*(-48+42)^2=6*(-6)^2=6*36=216.[/tex]
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Answers & Comments
Объяснение:
1.
[tex]1)\ 6*(a+b)+(a+b)^2=(a+b)*(6+a+b).\\2)\ 4*(x-y)+3*(x-y)^2=(x-y)*(3*(x-y)+4)=(x-y)*(3x-3y+4).\\3)\ (a-b)+(b-a)^2=(a-b)+(a-b)^2=(a-b)*(1+a-b).\\4)\ (a-b)^2-(b-a)=(a-b)^2+(a-b)=(a-b)*(a-b+1).[/tex]
2.
[tex]2)\ 14am-7an+8bm-4bn=7a(2m-n)+4b*(2m-n)=(2m-n)*(7a+4b).\\[/tex]
3.
[tex]2)\ 6m^2+12mn+6n^2=6*(m^2+2mn+n^2)=6*(m+n)^2=6*(56+44)^2=\\=6*100^2=6*10000=60000.\\4)\ -64a^3-8a^2b-\frac{1}{4}ab^2=- a*(64a^2+8ab+\frac{1}{4}b^2)=\\=-a*((8a)^2+2*8a*\frac{1}{2}+(\frac{1}{2}b) ^2)=-a*(8a+\frac{1}{2} b)^2=\\ =-(-6)*(8*(-6)+\frac{1}{2}*84)^2 =6*(-48+42)^2=6*(-6)^2=6*36=216.[/tex]