Question

Find :-
${( - 3 - x)}^{2}$
​

Answer 1

Use the identity : ( a - b )² = a² + b² - 2ab

$\longrightarrow\sf{{( - 3 - x)}^{2}}$

$\longrightarrow\sf{{-3}^{2} +( {-x}^{2}) - 2\times -3\times x}$

$\longrightarrow\sf{-9 - {x}^{2} +6x}$