Advertisements
Advertisements
प्रश्न
Find the zeroes of the quadratic polynomial f(x) = 6x2 – 3.
Write the zeros of the quadratic polynomial f(x) = 6x2 – 3.
Advertisements
उत्तर
To find the zeroes of the quadratic polynomial we will equate f(x) to 0
∴ f(x) = 0
⇒ 6x2 – 3 = 0
⇒ 3(2x2 – 1) = 0
⇒ 2x2 – 1 = 0
⇒ 2x2 = 1
⇒ `x^2 = 1/2`
⇒ `x = +- 1/sqrt(2)`
Hence, the zeroes of the quadratic polynomial f(x) = 6x2 – 3 are `1/sqrt(2), -1/sqrt(2)`.
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.

The graphs of y = p(x) are given in following figure, for some polynomials p(x). Find the number of zeroes of p(x).

Find the zeroes of the polynomial f(x) = x2 – 2x – 8 and verify the relation between its zeroes and coefficients.
One zero of the polynomial 3x3 + 16x2 + 15x – 18 is `2/3`. Find the other zeros of the polynomial.
Find α, β are the zeros of polynomial α + β = 6 and αβ = 4 then write the polynomial.
If –2 is a zero of the polynomial 3x2 + 4x + 2k, then find the value of k.
If α and β are the zeros of the polynomial f(x) = 6x2 + x – 2, find the value of `(α/β + α/β)`.
If the zeroes of the polynomial f(x) = x3 – 3x2 + x + 1 are (a – b), a and (a + b), find the values of a and b.
Find the value of k such that the polynomial x2-(k +6)x+ 2(2k - 1) has some of its zeros equal to half of their product.
If one zero of the quadratic polynomial x2 + 3x + k is 2, then the value of k is ______.
If the zeroes of the quadratic polynomial x2 + (a + 1) x + b are 2 and –3, then ______.
10. The zeroes of the quadratic polynomial x² + kx + k, k? 0.
If one of the zeroes of a quadratic polynomial of the form x² + ax + b is the negative of the other, then it ______.
The zeroes of the quadratic polynomial x² + 1750x + 175000 are ______.
If one of the zeroes of the cubic polynomial x3 + px² + qx + r is -1, then the product of the other two zeroes is ______.
The number of polynomials having zeroes as -2 and 5 is ______.
If the graph of a polynomial intersects the x-axis at only one point, it cannot be 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 ______.
The graph of y = f(x) is shown in the figure for some polynomial f(x). The number of zeroes of f(x) are ______.

