Q5 of 157 Page 30

Factorize :

p2 – 6p + 8

Given p2 – 6p + 8


Using (x + a)(x + b) = x2 + (a + b)x + ab … (I)


⇒ p2 – 6p + 8= p2 + ( – 4 – 2)p + ( – 4)×( – 2)


On comparing with (I),


a = – 4 and b = – 2


So, p2 – 6p + 8= (p – 4)(p – 2)


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