pq2 + q(p – 1) – 1 =? A. (pq + 1) (q - 1) B. p(q + 1) (q - 1) C

1.	pq2 + q(p – 1) – 1 =? A. (pq + 1) (q - 1) B. p(q + 1) (q - 1) C. q(p - 1) (q + 1) D. (pq - 1) (q + 1)
Answer» pq² + q(p – 1) – 1 = pq² + qp – q – 1 = pq(q + 1) – 1(q + 1) = (pq – 1)(q + 1)

pq2 + q(p – 1) – 1 =? A. (pq + 1) (q - 1) B. p(q + 1) (q - 1) C. q(p - 1) (q + 1) D. (pq - 1) (q + 1)

Answer»

pq² + q(p – 1) – 1 = pq² + qp – q – 1

= pq(q + 1) – 1(q + 1)

= (pq – 1)(q + 1)