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Question

If a, b and c are the zeroes of cubic polynomial P(x) = x3 – 21x2 + 3x + 665, where ba = 12 and c, b and a are in A.P., then which of the following option(s) is/are correct?

यदि a, bc त्रिघात बहुपद P(x) = x3 – 21x2 + 3x + 665 के शून्यक है जहाँ ba = 12 और c, b तथा a स.श्रे. में हैं, तब निम्नलिखित में से कौनसा/कौनसे विकल्प सही है/हैं?

A
ca = 14
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B
abc = 665
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C
abc = –665
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D
a+b+cb=3
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Solution

The correct option is D a+b+cb=3

Solution

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