gaucekatinna gaucekatinna

08-08-2016
Mathematics

Answered

Prove that (a-b) x (a+b)=2a x b is true. (a and b are vectors)

Verified Answer :

Hussain514 Hussain514

12-08-2016

(a-b)(a+b)= aa + ab - ba - bb

as

aa = 0 and bb = 0

-ba=ab then

(a-b)(a+b) = ab +ab = 2(a*b)

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