Wykonaj działanie;
1. 3(m+1)(n-2)+2(n+1)(m-2)=
2. x(x+1)(x+2)-x(x-1)(x-2)=
(3m+3)(n-2)+(2n+2)(m-2)=
3mn-6m+3n-6+2mn-4n+2m-4=
5mn-4m-n-10
(x2+x)(x+2)-(x2-x)(x-2)=
x3+2x2+x2+2x-x3-2x2-x2+2x=
4x
1. 3(mn-2m+1n-2)+2(nm+2n+1m-2)= 3mn-6m+3n-6+2nm+4n+2m-4=5mn-4m+7n-10
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1. 3(m+1)(n-2)+2(n+1)(m-2)=
(3m+3)(n-2)+(2n+2)(m-2)=
3mn-6m+3n-6+2mn-4n+2m-4=
5mn-4m-n-10
2. x(x+1)(x+2)-x(x-1)(x-2)=
(x2+x)(x+2)-(x2-x)(x-2)=
x3+2x2+x2+2x-x3-2x2-x2+2x=
4x
1. 3(mn-2m+1n-2)+2(nm+2n+1m-2)= 3mn-6m+3n-6+2nm+4n+2m-4=5mn-4m+7n-10