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  1. Chapter 14 Class 8 Factorisation
  2. Serial order wise

Transcript

Ex 14.4, 9 Find and correct the errors in the following mathematical statements. γ€–"(3x + 2)" γ€—^2= 3π‘₯^2 + 6x + 4 γ€–"(3x + 2)" γ€—^2= 3π‘₯^2 + 6x + 4 Solving L.H.S : γ€–"(3x + 2)" γ€—^2 Using γ€–(π‘Ž βˆ’π‘)γ€—^2=π‘Ž^2+𝑏^2βˆ’2π‘Žπ‘ Here a = 3x and b = 2 = γ€–(3π‘₯)γ€—^2 + γ€–(2)γ€—^2 + 2 (3x) (2) = (3^2 Γ— π‘₯^2) + 2 Γ— 2 + (2 Γ— 3 Γ— 2) x = γ€–9π‘₯γ€—^2 + 4 + 12x ∴ γ€–"(3x + 2)" γ€—^𝟐= γ€–πŸ—π’™γ€—^𝟐 + 4 + 12x is the correct statement.

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.