Question

Formulae for alpha square plus beta square

Answer 1

Hi friend !

Here is the formula :-
α² + β² = (α + β)² - 2αβ
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you can verify it too !

 (α + β)² - 2αβ

(α + β)² = α² + β² + 2αβ

so , 

 α² + β²  + 2αβ - 2αβ = α²  + β²

Answer 2

Answer:

Alpha square +beta square=(alpha +beta) square-2(alpha)(beta)

Step-by-step explanation:

(Alpha +beta ) square=alpha square +beta square +2(alpha)(beta)

so to get alpha square+ beta square we shift +2(alpha)(beta)

alpha square+beta square =(alpha +beta) square -2(alpha)(beta)