The calculation is as follows:
According to the meaning of the question, the product of the three children's ages this year is 630.
So the factorization of 630 is 630=7x9x 10.
According to the meaning of the question, Xiao Ting is 2 years older than Xiao Tian and Xiaoying is 1 year older than Xiao Ting.
It is concluded that Xiaoying 10 years old, Xiao Ting 9 years old and Xiaotian 7 years old.
Extended data:
Factorization factor is an identity deformation of polynomial, which requires that the left side of the equation must be polynomial. The result of factorization must be expressed in the form of product. Each factor must be an algebraic expression and the degree of each factor must be lower than that of the original polynomial.
As a result, only parentheses are left in the end, and factorization must be carried out until each polynomial factorization can no longer be decomposed; The first term of the polynomial of the result is generally positive. Extract the common factor from a formula, that is, recombine through the formula, and then extract the common factor.