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Mathematics, 20.10.2020 02:01 alisonlebron15

Hi. Please i need help with these questions :

Simplify
1.
2.
3.

$\frac{ {d}^{2} - 9 }{ {d}^{2} - 7d + 12 }$
$\frac{ {m}^{2} + 2mn + {n}^{2} }{ {m}^{2} - {n}^{2} }$
$\frac{ {x}^{2} + xy - 6 {y}^{2} }{ {x}^{2} - 3xy + 2 {y}^{2} }$

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Hi. Please i need help with these questions :

Simplify
1.

2.

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