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
0 تعليقات