The Zeroes of the Polynomial R(T) = -12t² + (K-3)t +48 Are Negative of Each Other - Bzziii.com

The zeroes of the polynomial r(t) = -12t² + (k-3)t +48 are negative of each other. Then k is

(a) 3

(b) 0

(c) -1.5

(d) -3






(a) 3

Explanation:

When the zeroes are negative,

Sum of zeroes = 0

`"-k (k - 3)"/"-12"` = 0

`"k - 3"/"-12"` = 0

 k - 3 = 0


∴ k = 3






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