CBSE course CBSE Class 8
Share
Notifications

View all notifications

Evaluate the Following: 53 × 55 - Mathematics

Login
Create free account


      Forgot password?
ConceptConcept of Identity

Question

Evaluate the following: 53 × 55

Solution

Here, we will use the identity \[\left( x + a \right)\left( x + b \right) = x^2 + \left( a + b \right)x + ab\]

\[53 \times 55\]

\[ = \left( 50 + 3 \right)\left( 50 + 5 \right)\]

\[ = {50}^2 + \left( 3 + 5 \right)50 + 3 \times 5\]

\[ = 2500 + 400 + 15\]

\[ = 2915\]

  Is there an error in this question or solution?

APPEARS IN

 RD Sharma Solution for Mathematics for Class 8 by R D Sharma (2019-2020 Session) (2017 to Current)
Chapter 6: Algebraic Expressions and Identities
Ex. 6.7 | Q: 2.4 | Page no. 47

Video TutorialsVIEW ALL [1]

Solution Evaluate the Following: 53 × 55 Concept: Concept of Identity.
S
View in app×