Formulae for α2 + β2
Answers:
We know the formula i.e. (a+b)2 = a2+b2+2ab
So from this we can write as (α+β)2 = α2+β2+2αβ
(α+β)2 = α2+β2+2αβ
⇒ α2+β2 = (α+β)2−2αβ
Therefore the formula is α2+β2 = (α+β)2−2αβ.
Formulae for α2 + β2
We know the formula i.e. (a+b)2 = a2+b2+2ab
So from this we can write as (α+β)2 = α2+β2+2αβ
(α+β)2 = α2+β2+2αβ
⇒ α2+β2 = (α+β)2−2αβ
Therefore the formula is α2+β2 = (α+β)2−2αβ.