Q26 of 39 Page 91

Find the value of k so that the zeroes of the quadratic polynomial 3x2 – k x + 14 are in the ratio 7:6.

Let the ratio be in a

So, the zeroes are 7a & 6a.


From given polynomial, 3x 2 – kx + 14



k = 39 a



⇒ 3a2 = 1/3


⇒ a = 1/3


So,


k = 13


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