Question

Factorise using the grouping of terms.
pr+ps+qr+qs

Answer 1

qr – pr + qs – ps

qr + qs – pr –ps

q(r + s) –p (r + s)

$= (q - p)(r - s)$

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Answer 2

qr – pr + qs – ps

qr + qs – pr –ps

q(r + s) –p (r + s)

$= (q - p)(r - s)$

♥︎if you like my answer thanks please♥︎