One zero of the polynomial 5x²-15x+k is twice the other, then k is
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Solution :
We have quadratic polynomial p(x) = 5x² - 15x + k & zero of the polynomial p(x) = 0.
Let the α & β are the two zeroes of the given polynomial .
As we know that given polynomial compared with ax² + bx + c;
- a = 5
- b = -15
- c = k
&
∴ Putting the value of β in equation (1),we get;
Thus;
The value of k will be 10 .
Anonymous:
Nice Work
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