Question:
Factorised form of p2 – 17p – 38 is
(a) (p – 19) (p + 2)
(b) (p – 19) (p – 2)
(c) (p + 19) (p + 2)
(d) (p + 19) (p – 2)
Solution:
(a) (p – 19) (p + 2)
Factorised form of p2 – 17p – 38 is = p2 – 19p + 2p – 38
Take out the common factors,
= p (p – 19) + 2 (p – 19)
Again take out the common factor,
= (p – 19) (p + 2)