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Question

If roots of equation ax2+bx+c=0, are distinct and less than unity, then which of the following is/are true?

A
9a+6b+4c25a+10b+4c is positive
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B
9a+3b+ca+b+c is positve
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C
9a+6b+4c25a+10+4c is negative
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D
c4a+2b+c is negative
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Solution

The correct options are
A 9a+6b+4c25a+10b+4c is positive
B 9a+3b+ca+b+c is positve

f(32)f(52)>09a+6b+4c25a+10b+4c is positive & f(3)f(1)>0 9a+3b+ca+b+c is positive
we cannot comment on f(0)f(2).
Same in downward parabola

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