Question : $9x^2+25 - 30x$ can be expressed as the square of:

Option 1: $-3x - 5$

Option 2: $3x+5$

Option 3: $3x-5$

Option 4: $3x^2-25$


Team Careers360 11th Jan, 2024
Answer (1)
Team Careers360 23rd Jan, 2024

Correct Answer: $3x-5$


Solution : Given:
$9x^2+25-30x$
= $9x^2-30x+25$
= $(3x)^2-2×3x×5+(5)^2$
= $(3x-5)^2$
Hence, the correct answer is $(3x-5)$.

How to crack SSC CHSL

Candidates can download this e-book to give a boost to thier preparation.

Download Now

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
GRE ® Registrations 2024
Apply
Apply for GRE® Test now & save 10% with ApplyShop Gift Card | World's most used Admission Test for Graduate & Professional Schools
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books