Ex 14.2, 4 (v) - Chapter 14 Class 8 Factorisation
Last updated at Dec. 1, 2021 by Teachoo
Ex 14.2
Ex 14.2, 1 (i)
Ex 14.2, 1 (ii)
Ex 14.2, 1 (iii) Important
Ex 14.2, 1 (iv) Important
Ex 14.2, 1 (v)
Ex 14.2, 1 (vi)
Ex 14.2, 1 (vii) Important
Ex 14.2, 1 (viii)
Ex 14.2, 2 (i)
Ex 14.2, 2 (ii) Important
Ex 14.2, 2 (iii)
Ex 14.2, 2 (iv) Important
Ex 14.2, 2 (v)
Ex 14.2, 2 (vi)
Ex 14.2, 2 (vii) Important
Ex 14.2, 2 (viii) Important
Ex 14.2, 3 (i)
Ex 14.2, 3 (ii) Important
Ex 14.2, 3 (iii)
Ex 14.2, 3 (iv) Important
Ex 14.2, 3 (v) Important
Ex 14.2, 3 (vi)
Ex 14.2, 3 (vii)
Ex 14.2, 3 (viii) Important
Ex 14.2, 3 (ix)
Ex 14.2, 4 (i)
Ex 14.2, 4 (ii) Important
Ex 14.2, 4 (iii)
Ex 14.2, 4 (iv) Important
Ex 14.2, 4 (v) Important You are here
Ex 14.2, 5 (i)
Ex 14.2, 5 (ii) Important
Ex 14.2, 5 (iii)
Transcript
Ex 14.2, 4 Factorise. (v) 𝑎^4 – 2𝑎^2 𝑏^2 + 𝑏^4 𝑎^4 – 2𝑎^2 𝑏^2 + 𝑏^4 = (𝑎^2 )^2 − 2𝑎^2 𝑏^2+(𝑏^2 )^2 = (𝑎^2 )^2 +(𝑏^2 )^2−2 (𝑎^2×𝑏^2 ) Using (𝑥 − y)^2=𝑥^2+𝑦^2 − 2xy Here 𝑥=𝑎^2 and y = 𝑏^2 = (𝑎^2 − b^2 )^2 Using 𝑥^2 − y^2=(𝑥+𝑦)(𝑥 − y) Here 𝑥=𝑎 and y = 𝑏 = [(𝑎+𝑏) (𝑎 − b)]^2 = (𝒂+𝒃)^𝟐 (𝒂 − 𝒃)^𝟐 (As (𝑎𝑏)^𝑚=𝑎^𝑚×𝑏^𝑚)
