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Question

The quadratic polynomial in x whose zeros are -a and 2a is:


A

(x + a) (x – 2a)

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B

(x – 2a) (x + 2a)

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C

(x + a) (x + 2a)

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D

(x – a) (x – a)

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Solution

The correct option is A

(x + a) (x – 2a)


Zeroes of a polynomial are –a and 2a.

Thus, f(x) = (x + a)(x - 2a)
f(x) = x2ax+2a2


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