What number must you add to complete the square? x^2+14x=-5 A. 14 B. 28 C. 7 D. 49

asked Dec 14, 2019 126k views

0 votes

What number must you add to complete the square? x^2+14x=-5

A. 14

B. 28

C. 7

D. 49

8.6k points

Please log in or register to add a comment.

2 votes

since the coefficient of the x² term is 1, then

add (half the coefficient of the x-term )² to both sides

that is (
(14)/(2) )² = 49

Tickled Pink answered Dec 17, 2019

8.0k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers