Which of the binomials below is a factor of this trinomial? x^2+19x+84 A. x-7 B. x+84 C. x+7 D. x^2+12

Mathematics · High School · Mon Jan 18 2021

Answered on

We have,

x² +19x+84

By middle-term split method 

x² + 12x + 7x + 84

x(x + 12) + 7(x + 12)

(x + 7) (x + 12)

 

Hence, option (C) is correct.