Question

What is the formula of (-a-b) 2 ??

Answer 1

Hi ,

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We know the algebraic identity,

( x + y )² = x² + 2xy + y²

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Now ,

( - a - b )²

= [ -( a + b ) ]²

= ( a + b )²

= a² + 2ab + b²

I hope this helps you.

: )

Answer 2

Hi,

Here is your answer,

(-a-b)²

→ {-a-b}² = {-(a+b)}²           ∴  { (-) (-) = + }

→ (a + b)²

→ a² + 2ab + b²

Hope it helps you !