Find a quadratic polynomial,each with the given numbers as the sum and product of its zeroes respectively: $\sqrt{2}, \frac{1}{3}$.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(D) Let the quadratic polynomial be $p(x) = ax^2 + bx + c$,and its zeroes be $\alpha$ and $\beta$.
The sum of the zeroes is given by $\alpha + \beta = \sqrt{2} = -\frac{b}{a}$.
The product of the zeroes is given by $\alpha \beta = \frac{1}{3} = \frac{c}{a}$.
To express these with a common denominator $a$,we write $\alpha + \beta = \frac{3\sqrt{2}}{3} = -\frac{b}{a}$.
Comparing the coefficients,we get $a = 3$,$b = -3\sqrt{2}$,and $c = 1$.
Substituting these values into the general form $ax^2 + bx + c$,we get the quadratic polynomial $3x^2 - 3\sqrt{2}x + 1$.

Explore More

Similar Questions

Find a quadratic polynomial,each with the given numbers as the sum and product of its zeroes respectively: $1, 1$.

Look at the graph given below. It is the graph of $y=p(x)$ where $p(x)$ is a polynomial. Find the number of zeroes of $p(x)$.

If the zeroes of the polynomial $x^{3}-3x^{2}+x+1$ are $a-b, a, a+b$,find $a$ and $b$.

Difficult
View Solution

Check whether the first polynomial is a factor of the second polynomial by dividing the second polynomial by the first polynomial: $t^{2}-3$ and $2t^{4}+3t^{3}-2t^{2}-9t-12$.

Difficult
View Solution

Obtain all other zeroes of $3x^{4} + 6x^{3} - 2x^{2} - 10x - 5$,if two of its zeroes are $\sqrt{\frac{5}{3}}$ and $-\sqrt{\frac{5}{3}}$.

Difficult
View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo