I need help I’m not sure if I got the right answer and showed the correct work :( !!

asked Jun 23, 2023 88.3k views

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$\begin{gathered} x^2-25+(x^2-1) \\ =x^2-25+x^2\text{-1} \\ =2x^2-\text{2}6 \end{gathered}$

For problem 6:

$\begin{gathered} (x-5)(x+5) \\ =x^2+5x-5x-25 \\ =x^2-25 \end{gathered}$

For problem 7:

$\begin{gathered} (x-1)(x+1) \\ =x^2-x+x-1 \\ =x^2-1 \end{gathered}$

Zivka answered Jun 29, 2023

by Zivka

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