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प्रश्न
If one zero of the polynomial p(x) = 6x2 + 37x – (k – 2) is reciprocal of the other, then find the value of k.
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उत्तर
Let one zero be x and other zero be `1/x`
∴ Product of zeroes = `c/a`
`\implies x xx 1/x = (-(k - 2))/6`
`\implies` 1 = `(2 - k)/6`
`\implies` 6 = 2 – k
`\implies` k = 2 – 6 = –4
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Case Study -1

The figure given alongside shows the path of a diver, when she takes a jump from the diving board. Clearly it is a parabola.
Annie was standing on a diving board, 48 feet above the water level. She took a dive into the pool. Her height (in feet) above the water level at any time ‘t’ in seconds is given by the polynomial h(t) such that h(t) = -16t2 + 8t + k.
The zeroes of the polynomial r(t) = -12t2 + (k - 3)t + 48 are negative of each other. Then k is ______.
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The zeroes of the polynomial p(x) = 25x2 – 49 are ______.
