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The sum of zeros of the polynomial x2-6x+8 is

(a) 6

(b) -6/8

(c) 6/2

(d) -1/2

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Correct answer is (a) 6

The sum of zeros ⇒ α+β = -b/a

                            ⇒ -(-6)/1 

                            ⇒ 6 

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