Advertisements
Advertisements
प्रश्न
If one zero of the polynomial x2 – 4x + 1 is `(2 + sqrt(3))`, write the other zero.
Advertisements
उत्तर
Let the other zeroes of x2 – 4x + 1 be a.
By using the relationship between the zeroes of the quadratic polynomial.
We have, sum of zeroes = `(-("Coefficient of" x))/(("Coefficient of" x^2))`
∴ `2 + sqrt(3) + a = -((-4))/1`
⇒ `a = 2 - sqrt(3)`
Hence, the other zeroes of x2 – 4x + 1 is `(2 - sqrt(3))`.
APPEARS IN
संबंधित प्रश्न
The graphs of y = p(x) are given in following figure, for some polynomials p(x). Find the number of zeroes of p(x), in the following.

Find the zeroes of the polynomial f(x) = x2 – 2x – 8 and verify the relation between its zeroes and coefficients.
Find all the zeroes of polynomial (2x4 – 11x3 + 7x2 + 13x – 7), it being given that two of its zeroes are `(3 + sqrt(2))` and `(3 - sqrt(2))`.
Find the zeros of the polynomial x2 + x – p(p + 1).
If –4 is a zero of the polynomial x2 – x – (2k + 2) is –4, then find the value of k.
If –2 is a zero of the polynomial 3x2 + 4x + 2k, then find the value of k.
Write the zeros of the polynomial f(x) = x2 – x – 6.
Find the zeroes of the quadratic polynomial f(x) = 6x2 – 3.
Find the value of k such that the polynomial x2 − (k + 6)x + 2(2k −1) has sum of its zeros equal to half of their product.
A quadratic polynomial, whose zeroes are -3 and 4, is ______.
The number of polynomials having zeroes as -2 and 5 is ______.
If the zeroes of the quadratic polynomial ax² + bx + c, c # 0 are equal, then ______.
A quadratic polynomial, whose zeores are -4 and -5, is ______.
If one of the zeroes of the cubic polynomial x3 + px² + qx + r is -1, then the product of the other two zeroes is ______.
If p(x) is a polynomial of at least degree one and p(k) = 0, then k is known as ______.
Which of the following is not the graph of a quadratic polynomial?
The graph of y = f(x) is shown in the figure for some polynomial f(x).

The number of zeroes of f(x) is ______.
