Factorize 9p2 - q2 6qr - 9r2 - JAMB Mathematics 1992 Question
Factorize 9p2 - q2 + 6qr - 9r2
A
(3p - 3q + r)(3p - q - 3r)
B
(6p - 3q - 3r)(3p - q - 4r)
C
(3p - q + 3r)(3p - q - 3r)
D
(3q - p + 3r)(3q - p + 3r)
correct option: c
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