Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Last updated at May 29, 2023 by Teachoo
Example 4 Factorise 𝑥^2 + 8𝑥 + 16 𝑥^2 + 8𝑥 + 16 = 𝑥^2 + 8𝑥 + 4^2 = 𝑥^2 + (2 × 4 × 𝑥) + 4^2 = 𝑥^2 + 4^2 + (2 × 4 × 𝑥) Using (𝑎+𝑏)^2 = 𝑎^2+𝑏^2+2𝑎𝑏 Here 𝑎=𝑥, 𝑏=4 = (〖𝒙 + 𝟒)〗^𝟐