Question

(2mm-5mn²+8m²n)-(20mn+6m²n-3mn²+m)​

Answer 1

m x (-18n - 8n²+ 14mn + 1)

.

Answer 2

Explicación paso a paso:

(2mm-5mn²+8m²n)-(20mn+6m²n-3mn²+m) =

(2m²-5mn²+8m²n)-m×(20n+6mn-3n²+1)=

(m×(2m-5n²+8mn))-m×(20n+6mn-3n²+1)=

m×(2m-5n²+8mn)-m×(20n+6mn-3n²+1)=

m×(2m-5n²+8mn-(20n+6mn-3n²+1))=

m×(2m-5n²+8mn-20n-6mn+3n²-1)=

resultado =

m × ( 2m - 2n² + 2mn - 20n - 1 )