Use app×
Ask a Question
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE

Using suitable identities, evaluate the 72 x 68.

← Prev Question
0 votes
10.6k views
in Algebraic Expressions by (49.3k points)
closed by

Using suitable identities, evaluate the 72 x 68.

Play Quiz Game >

1 Answer

0 votes
by (48.4k points)
selected by
 
Best answer

72 x 68

= (70 + 2) (70 – 2)

= (70)2 – (2)2 [Using in identity (a + b) (a – b) = a2 – b2]

= 4900 – 4

= 4896

← Prev Question

Find MCQs & Mock Test

  1. JEE Main 2025 Test Series
  2. NEET Test Series
  3. Class 12 Chapterwise MCQ Test
  4. Class 11 Chapterwise Practice Test
  5. Class 10 Chapterwise MCQ Test
  6. Class 9 Chapterwise MCQ Test
  7. Class 8 Chapterwise MCQ Test
  8. Class 7 Chapterwise MCQ Test

Related questions

0 votes
1 answer
Simplify: (x – 5)^2 + 10x.
asked Jun 24, 2020 in Algebraic Expressions by Kumkum01 (49.3k points)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

User Contribution to Sarthaks eConnect
Managed by Sarthaks Digitizing India
...