Question 12 - Finding Errors - Chapter 12 Class 8 Factorisation

Last updated at Dec. 24, 2024 by

Ex 14.4, 12 - Find and correct the errors (z + 5)^2 = z^2 + 25

 

Go Ad-free

Transcript

Question 12 Find and correct the errors in the following mathematical statements. 〖"(z + 5)" 〗^2= 𝑧^2 + 25 Solving L.H.S : 〖"(z + 5)" 〗^2 Using 〖(𝑎+𝑏)〗^2=𝑎^2+𝑏^2+2𝑎𝑏 Here a = z and b = 5 = 〖(𝑧)〗^2 + 〖(5)〗^2 + 2 (z) (5) = 𝑧^2 + 25 + 10z = 𝑧^2 + 10z + 25 ∴ (𝒛+𝟓)^𝟐 = 𝒛^𝟐 + 10z + 25 is the correct statement.

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo