हिंदी

Find a Cubic Polynomial with the Sum of Its Zeroes, Sum of the Products of Its Zeroes Taken Two at a Time and the Product of Its Zeroes as 5, -2 and -24 Respectively.

Advertisements
Advertisements

प्रश्न

Find a cubic polynomial with the sum of its zeroes, sum of the products of its zeroes taken two at a time and the product of its zeroes as 5, -2 and -24 respectively. 

Advertisements

उत्तर

We know the sum, sum of the product of the zeroes taken two at a time and the product of the zeroes of a cubic polynomial then the cubic polynomial can be found as `x^3` – (sum of the zeroes)`x^2` + (sum of the product of the zeroes taking two at a time)x – product of zeroes Therefore, the required polynomial is 

`x^3 – 5x^2 – 2x + 24`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Polynomials - Exercises 2

APPEARS IN

आर.एस. अग्रवाल Mathematics [English] Class 10
अध्याय 2 Polynomials
Exercises 2 | Q 5

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Find the zeroes of the following quadratic polynomial and verify the relationship between the zeroes and the coefficients.

6x2 – 3 – 7x


Find the zeroes of the following quadratic polynomial and verify the relationship between the zeroes and the coefficients:

t2 – 15


If α and β are the zeroes of the quadratic polynomial f(x) = ax2 + bx + c, then evaluate `1/(aalpha+b)+1/(abeta+b)`.


If α and β are the zeros of the quadratic polynomial p(s) = 3s2 − 6s + 4, find the value of `alpha/beta+beta/alpha+2[1/alpha+1/beta]+3alphabeta`


If If α and β are the zeros of the quadratic polynomial f(x) = x2 – 2x + 3, find a polynomial whose roots are `(alpha-1)/(alpha+1)` , `(beta-1)/(beta+1)`


Find the zeroes of the polynomial f(x) = `2sqrt3x^2-5x+sqrt3` and verify the relation between its zeroes and coefficients. 


Find the zeroes of the quadratic polynomial `4x^2 - 4x + 1` and verify the relation between the zeroes and the coefficients. 


Find the quadratic polynomial, sum of whose zeroes is 8 and their product is 12. Hence, find the zeroes of the polynomial. 


Verify that 3, -2, 1 are the zeros of the cubic polynomial `p(x) = (x^3 – 2x2 – 5x + 6)` and verify the relation between it zeros and coefficients. 

 


If f(x) = `x^4– 5x + 6" is divided by g(x) "= 2 – x2` 


On dividing `3x^3 + x^2 + 2x + 5` is divided by a polynomial g(x), the quotient and remainder are (3x – 5) and (9x + 10) respectively. Find g(x). 


The product of the zeros of x3 + 4x2 + x − 6 is


The below picture are few natural examples of parabolic shape which is represented by a quadratic polynomial. A parabolic arch is an arch in the shape of a parabola. In structures, their curve represents an efficient method of load, and so can be found in bridges and in architecture in a variety of forms.

If the sum of the roots is –p and the product of the roots is `-1/"p"`, then the quadratic polynomial is:


If two of the zeroes of a cubic polynomial are zero, then it does not have linear and constant terms.


If all three zeroes of a cubic polynomial x3 + ax2 – bx + c are positive, then at least one of a, b and c is non-negative.


Find the zeroes of the following polynomials by factorisation method and verify the relations between the zeroes and the coefficients of the polynomials:

`4x^2 + 5sqrt(2)x - 3`


Find the zeroes of the following polynomials by factorisation method and verify the relations between the zeroes and the coefficients of the polynomials:

`y^2 + 3/2 sqrt(5)y - 5`


If the zeroes of the polynomial x2 + px + q are double in value to the zeroes of the polynomial 2x2 – 5x – 3, then find the values of p and q.


The zeroes of the polynomial p(x) = 25x2 – 49 are ______.


If α, β are zeroes of quadratic polynomial 5x2 + 5x + 1, find the value of α2 + β2.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×