How do you simplify $(z^2-49) /(z+7)$ and what are the restrictions?

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Answer 1 · 2018-05-13T14:04:29

$z-7$

1) Factorize quadratic on numerator

$((z+7)(z-7))/(z+7)$

2) Divide the top and bottom by the common factor ( $z+7$ )

$(z-7)/1$

3) Done

$z-7$

How do you simplify (z^2-49) /(z+7)(z^2-49) /(z+7) and what are the restrictions?