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

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Answer 1 · 2018-05-13T14:04:29

$z - 7$ $z-7$

1) Factorize quadratic on numerator

$\frac{(z + 7) (z - 7)}{z + 7}$ $((z+7)(z-7))/(z+7)$

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

$\frac{z - 7}{1}$ $(z-7)/1$

3) Done

$z - 7$ $z-7$

How do you simplify (z^2-49) /(z+7)z2−49z+7(z^2-49) /(z+7) and what are the restrictions?