Factorize of the following expressions: qr - pr + qs -ps - Vidyadip

Question

Factorize of the following expressions: $qr - pr + qs -ps$

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Answer

$qr - pr + qs -ps $
$= (qr - pr) + (qs - ps) $
$= r(q - p) + s(q - p)$
$= (r + s)(q - p) [$taking $(q - p)$ as the common factor$]$

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