Question

how to do answer plz​

Answer 1

Answer:

$(a + b) {}^{2} = a {}^{2} + 2ab + b {}^{2} \\ = (a + b)(a) + (a + b)(b) \\ = a {}^{2} + ab + ab + b {}^{2} \\ = a {}^{2} + 2ab + b {}^{2} .$

Step-by-step explanation:

HOPE IT HELP'S..............

Answer 2

$\sf \bigstar \: QueStioN :-$

To prove that special algebraic identity:-

(a + b)² = a² + 2ab + b²

$\sf \bigstar \: Method \: of \: Solution : -$

$\: \: \: \: \purple \implies\tt \red{( a + b )²}$

Let's Do !

=> ( a × a ) + ( b × b ) + 2 × a × b

=> a² + b² + 2ab

$\sf \bigstar \: Second \: Method : -$

$\: \: \: \: \: \purple \implies \tt \red{(a² + b²)}$

=> ( a + b ) ( a + b )

=> a( a + b ) + b( a + b )

=> a² + ab + ab + b²

=> a² + 2ab + b²

Hence, Itz Verified...!!