Question

a square + b square = explanation

Answer 1

FORMULA:
a^2+b^2 =(a+b)(a-b)

PROOF:

R H S = (a + b)(a-b)
=a(a-b)+b(a-b)
=a^2-ab+ab-b^2
=a^2-b^2.

HENCE PROVED

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Answer 2

Hii ☺ !!


a² + b² = ( a + b )² -2ab



Prove :



a² + b² = ( a + b )² - 2ab



a² + b² = a² + b²+ 2ab - 2ab


a² + b² = a² + b².




LHS = RHS


Hence,

a² + b² =. ( a + b )² - 2ab