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Mathematics 9 Online
OpenStudy (anonymous):

Factor the four-term polynomial. pq - 3r + pr - 3q. a.(p - 3)(q + r) b.(p - r)(q + 3) c.(p + 3)(q - r)

Parth (parthkohli):

=> pq + pr - 3r - 3q => p(q + r) - 3(q + r) => (p - 3)(q + r)

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