Question

(a+b)^2 = ?

answer needed !!!​

Answer 1

$\huge{\mid{\boxed{\sf{\color{purple}{AnS}{\color{pink}{WeR}}}}}\mid}$

( a + b )^2 = a^2 + b^2 + 2ab

Answer 2

Solution -

$:\implies\sf{(a + b)^2}$

$:\implies\sf{(a)^2 +(b)^2 + 2 \times a \times b }$

$:\implies\sf{a^2 +b^2 + 2ab }$

$\red{\bigstar}$ $\large{\boxed{\sf{\green{a^2 + b^2 + 2ab}}}}$

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$\pink{\bigstar}$ Know MorE -

$\red{\bigstar}$Some useful identities -

• $\sf\green{{(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab}$

• $\sf\green{{(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab}$

• $\sf\green{(a + b)^3 = a^3 + b^3 + 3ab(a + b)}$

• $\sf\green{(a - b)^3 = a^3 - b^3 - 3ab(a - b)}$

$\red{\bigstar}$Signs are changed on the following bases -

• (-) (-) = (+)

• (+) (+) = (+)

• (-) (+) = (-)

• (+) (-) = (-)