Ex 10.2, 4 - Chapter 10 Class 7 Algebraic Expressions

Last updated at August 13, 2026 by

Ex 10.2, 4 - If a = 2, b = -2, find value of (i) a^2 + b^2 - Ex 10.2

 

part 2 - Ex 10.2, 4 - Ex 10.2 - Serial order wise - Chapter 10 Class 7 Algebraic Expressions

 

part 3 - Ex 10.2, 4 - Ex 10.2 - Serial order wise - Chapter 10 Class 7 Algebraic Expressions

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Transcript

Ex 10.2, 4 If a = 2, b = – 2, find the value of: (i) a2 + b2a2 + b2 Putting a = 2, b = −2 = (2)2 + (−2)2 = 4 + 4 = 8 Ex 10.2, 4 If a = 2, b = – 2, find the value of: (ii) a2 + ab + b2a2 + ab + b2 Putting a = 2, b = −2 = (2)2 + (2)(−2) + (−2)2 = 4 − 4 + 4 = 0 + 4 = 4 Ex 10.2, 4 If a = 2, b = – 2, find the value of: (iii) a2 – b2a2 – b2 Putting a = 2, b = −2, = (2)2 − (−2)2 = 4 − 4 = 0

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