English

Find α, β are the zeros of polynomial α + β = 6 and αβ = 4 then write the polynomial.

Advertisements
Advertisements

Questions

Find α, β are the zeros of polynomial α + β = 6 and αβ = 4 then write the polynomial. 

If α, β are the zeros of a polynomial such that α + β = 6 and αβ = 4 then write the polynomial.

Sum
Advertisements

Solution

If the zeros of the quadratic polynomial are 𝛼 and 𝛽 then the quadratic polynomial can be found as x2 – (α + β)x + αβ   ...(1) 

Substituting the values in (1), we get 

x2 – 6x + 4

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Polynomials - EXERCISE 2C [Page 66]

APPEARS IN

R.S. Aggarwal Mathematics [English] Class 10
Chapter 2 Polynomials
EXERCISE 2C | Q 4. | Page 66

RELATED QUESTIONS

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


One zero of the polynomial 3x3 + 16x2 + 15x – 18 is `2/3`. Find the other zeros of the polynomial.


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 – 3x – m(m + 3).


If –2 is a zero of the polynomial 3x2 + 4x + 2k, then find the value of k.


If 𝛼 and 𝛽 be the zeroes of the polynomial `2x^2 - 7x + k` write the value of (𝛼 + 𝛽 + 𝛼𝛽).


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.


The zeroes of the quadratic polynomial x2 + 99x + 127 are ______.


If one of the zeroes of a quadratic polynomial of the form x² + ax + b is the negative of the other, then it ______.


A quadratic polynomial, whose zeores are -4 and -5, is ______.


The zeroes of the quadratic polynomial x² + 1750x + 175000 are ______.


If x3 + 1 is divided by x2 + 5, then the possible degree of quotient 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 ______.


If 4x² – 6x – m is divisible by x – 3, the value of m is exact divisor of ______.


If α and β are the zeroes of the polynomial x2 – 1, then the value of (α + β) is ______.


The given linear polynomial y = f(x) has


If α and β are the zeroes of the polynomial x2 + x − 2, then find the value of `alpha/beta+beta/alpha`


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×