Ex 9.5, 2 - Use the identity (x + a) (x + b) = x^2 + (a + b) x + ab to

 

 

  1. Chapter 9 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

Transcript

Ex 9.5, 2 Use the identity (π‘₯+π‘Ž)(π‘₯+𝑏)=π‘₯^2+(π‘Ž+𝑏)π‘₯+π‘Žπ‘ to find the following products. (i) (π‘₯+3) (π‘₯+7) (π‘₯+3) (π‘₯+7) (π‘₯+π‘Ž)(π‘₯+𝑏)=π‘₯^2+(π‘Ž+𝑏)π‘₯+π‘Žπ‘ Putting π‘Ž = 3 & 𝑏 = 7 = π‘₯^2+(3+7)π‘₯+(3Γ—7) = 𝒙^𝟐+πŸπŸŽπ’™+𝟐𝟏

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