Question

$(a - b) {}^{2}$
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Answer 1

(a-b)²= a²-2•a•b+b²= a²-2ab+b²

Answer 2

$\huge\boxed{\texttt{\fcolorbox{purple}{pink}{Heya !!!}}}$

${(a - b)}^{2}$

$= {a}^{2} + {b}^{2} - 2ab$

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