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Evaluate the Following: 34 × 36 - Mathematics

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ConceptConcept of Identity

Question

Evaluate the following: 34 × 36

Solution

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

\[34 \times 36\]

\[ = \left( 30 + 4 \right)\left( 30 + 6 \right)\]

\[ = {30}^2 + \left( 4 + 6 \right)30 + 4 \times 6\]

\[ = 900 + 300 + 24\]

\[ = 1224\]

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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: 2.6 | Page no. 47

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Solution Evaluate the Following: 34 × 36 Concept: Concept of Identity.
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