JEE Main 201325 AprilOnline
- Exam
- JEE Main
- Year
- 2013
- Date
- 25 April
- Mode
- Online
- Subject
- Mathematics
- Chapter
- Quadratic Equation
JEE Main 2013 · 25 April · Online · Mathematics · Quadratic Equation
If p and q are non-zero real numbers and α^3+β^3=-p, α β=q , then a...
If and are non-zero real numbers and , then a quadratic equation whose roots are is :
Options
- A
- B
- C
- D
Correct answer
B.
Step-by-step solution
Given \alpha \beta=q\frac{\alpha^2}{\beta}\frac{\beta^2}{\alpha}\frac{\alpha^2}{\beta}+\frac{\beta^2}{\alpha}=\frac{\alpha^3+\beta^3}{\alpha \beta}=\frac{-p}{q}\frac{\alpha^2}{\beta} \times \frac{\beta^2}{\alpha}=\alpha \beta=q$