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Question

Find the zeros of the quadratic polynomial x28x+12.


A

2 and 6

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B

8 and 4

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C

10 and 2

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D

4 and 5

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Solution

The correct option is A

2 and 6


To find the zeroes, equate the polynomial to zero and then factorise.

x28x+12=0

x26x2x+12=0

x(x6)2(x6)=0

(x6)(x2)=0

x6=0 or x2=0x=6; 2

2 and 6 are the zeros of the quadratic polynomial.


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