Answer:
Correct choice is C). mn=ac
Step-by-step explanation:
Given statement is that the first step in factoring a trinomial of the form is to find two numbers, m and n, such that m + n = b and _____.
We know that when we factor polynomial of type [tex]ax^2+bx+c[/tex] ,product of both numbers m and n must be same as product of a and c.
Hence correct choice is C). mn=ac
