Algebra Identities - Identity IV
Last updated at April 16, 2024 by Teachoo
Question 2 Use the identity (𝑥+𝑎)(𝑥+𝑏)=𝑥^2+(𝑎+𝑏)𝑥+𝑎𝑏 to find the following products. (i) (𝑥+3) (𝑥+7) (𝑥+3) (𝑥+7) (𝑥+𝑎)(𝑥+𝑏)=𝑥^2+(𝑎+𝑏)𝑥+𝑎𝑏 Putting 𝑎 = 3 & 𝑏 = 7 = 𝑥^2+(3+7)𝑥+(3×7) = 𝒙^𝟐+𝟏𝟎𝒙+𝟐𝟏