Question

Which expression is the factorization of x^2+10+21

Answer 1

Answer:

x^2 - 10x + 21 = (x - 3)(x - 7)

Step-by-step explanation:

x^2 - 10x + 21

Find the two numbers that when added equal - 10, and when multiplied equal 21.

The number - 3 and -7 meet the criteria.

x^2 - 10x + 21 = (x - 3)(x - 7)