α, β are zeroes of the polynomial 3x2 - 8x + k . Find the value of k , if α2 + β2 = 40/9 .

CBSE Class 10 Maths PYQ · Polynomials · Relationship of Zeros and Coefficients · 3 Marks · March 2025 · Basic

Solve it yourself first — then press or tap Show Solution. Use for previous / next question.

1443 Marks · March 2025 · Basic
$\alpha, \beta$ are zeroes of the polynomial $3x^2 - 8x + k$. Find the value of $k$, if $\alpha^2 + \beta^2 = \frac{40}{9}$.
Show SolutionHide Solution
$p(x) = 3x^2 - 8x + k \Rightarrow \alpha + \beta = \frac{8}{3}, \alpha\beta = \frac{k}{3}$
$\alpha^2 + \beta^2 = \frac{40}{9} \Rightarrow (\frac{8}{3})^2 - \frac{2k}{3} = \frac{40}{9} \Rightarrow k = 4$
← Previous questionNext question →