Find the missing term so that r2 + _____ + 100 forms a perfect square trinomial. A. 10r B. 20r C. −10r D. −20r

Scott McLeod asked Nov 15, 2022

413,276 views

6 votes

Find the missing term so that r2 + _____ + 100 forms a perfect square trinomial.

A. 10r B. 20r C. −10r D. −20r

Scott McLeod asked Nov 15, 2022

2.7k points

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

13 votes

Answer:

B 20r

Explanation:

r² + + 100

r² = (r ) ( ) signs are all positive. 100 = (10) (10) last number. so

(r + 10)(r + 10)

r(r+ 10) + 10(r + 10)

r² + 10r + 10r + 100

r² + 20r + 100

Njorden answered Nov 19, 2022

3.0k points

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

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

1.6m questions

2.0m answers