Question

1)Calcule o valor de 1997²-1996²

me ajudeem pfvrr​

Answer 1

$\Large\mathsf\displaystyle{} {1997}^{2} - {1996}^{2} \\\\ \Large\mathsf\displaystyle{}\left(1997 - 1996\right)\cdot\left(1997 + 1996\right) \\\Large\mathsf\displaystyle{}1 \left(1997 + 1996\right) \\ \Large\mathsf\displaystyle{}1\cdot3993 \\ \Large\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{ 3993 }}}\end{gathered} }$

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