The difference between factorization and integral multiplication is that integral multiplication multiplies several integers into a God

The difference between factorization and integral multiplication is that integral multiplication multiplies several integers into one (integral), while factorization transforms a polynomial into several (product)

Observe the process of (a + b) (M + n) multiplication, factorization and integral multiplication are the same

（a+b)(m+n)=am+an+bm+bn
am+an+bm+bn
=a(m+n)+b(m+n)
=(m+n)(a+b)
Factorization and integral multiplication are reciprocal processes

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