RRB NTPC 29 April 2016 Paper

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Question : 89 of 100

Marks: +1, -0

Factors of

\x^2

– 6x + 8 are:

(x – 4) (x – 2)
(x + 4) (x + 2)
(x + 8) (x – 2)
(x – 4) (x + 2)

Solution:

( 1 ) x ^ { 2 } - 6 x + 8

⇒ x - 4 x - 2 x + 8

⇒ x ( x - 4 ) - 2 ( x - 4 )

⇒ ( x - 2 ) ( x - 4 )

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