Ex 12.3

Chapter 12 Class 7 Algebraic Expressions
Serial order wise

This video is only available for Teachoo black users

This video is only available for Teachoo black users

This video is only available for Teachoo black users

This video is only available for Teachoo black users

Get live Maths 1-on-1 Classs - Class 6 to 12

Transcript

Ex 12.3, 5 When a = 0, b = – 1, find the value of the given expressions: (i) 2a + 2b 2a + 2b Putting a = 0, b = −1 = 2 (0) + 2 (−1) = 0 − 2 = −2 Ex 12.3, 5 When a = 0, b = – 1, find the value of the given expressions: (ii) 2a2 + b2 + 1 2a2 + b2 + 1 Putting a = 0 , b = −1 = 2(0)2 + (−1)2 + 1 = 2 × (0) + (1) + 1 = 0 + 1 + 1 = 2 Ex 12.3, 5 When a = 0, b = – 1, find the value of the given expressions: (iii) 2a2b + 2ab2 + ab 2a2b + 2ab2 + ab Putting a = 0, b = −1 = 2 (0)2(−1) + 2 (0) (−1)2 + (0) (−1) = −2 (0) + 0 (−1)2 + 0 = 0 + 0 = 0 Ex 12.3, 5 When a = 0, b = – 1, find the value of the given expressions: (iv) a2 + ab + 2a2 + ab + 2 Putting a = 0 , b = −1 = (0)2 + (0) (−1) + 2 = 0 + 0 + 2 = 2