Question 7 - Finding Errors - Chapter 12 Class 8 Factorisation

Last updated at Dec. 16, 2024 by

Ex 14.4, 7 - Find and correct (2x)^2 + 4(2x) + 7 = 2x^2 + 8x + 7

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Question 7 Find and correct the errors in the following mathematical statements. 〖"(2x)" 〗^2+ 4(2x) + 7 = 〖"2x" 〗^2+ 8x + 7 〖"(2x)" 〗^2+ 4(2x) + 7 = 〖"2x" 〗^2+ 8x + 7 Solving LHS: 〖(2𝑥)〗^2 + 4 (2x) + 7 = (2^2×𝑥^2) + (4 × 2) x + 7 = 〖4𝑥〗^2 + 8x + 7 ∴ 〖(𝟐𝒙)〗^𝟐 + 4 (2x) + 7 = 〖𝟒𝒙〗^𝟐 + 8x + 7 is the correct statement

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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