Algebra & Equations · Question 20 · Easy
What is the product of the roots of 3x² + 5x − 12 = 0?
- 4
- −5/3
- 12
- −4
Answer and explanation
Answer: D. −4
Explanation: For ax² + bx + c = 0, the product of the roots is c/a = −12/3 = −4.
Previous: One-third of a number is 12 more than one-fifth of it. What is the number? · Next: If x + y = 12 and xy = 35, what is the value of x² + y²?
Practise algebra & equations
Try a fresh set of algebra & equations questions with an explanation after every answer, free and without signing up: Algebra & Equations practice. Or sit a full placement mock test.
More algebra & equations questions
- If 2x/3 − 5 = 9, what is the value of x?
- The sum of three consecutive integers is 84. What is the largest of them?
- One-third of a number is 12 more than one-fifth of it. What is the number?
- If x + y = 12 and xy = 35, what is the value of x² + y²?
- If 4x + 3y = 31 and 2x − y = 3, what is the value of xy?
- A positive number exceeds its positive square root by 30. What is the number?
- Which quadratic equation has roots 3 and −5?
- A number greater than 1, added to its reciprocal, gives 26/5. What is the…
- If (x − 2)/(x + 3) = 3/4, what is the value of x?
- If α and β are the roots of x² − 6x + 7 = 0, what is the value of α² + β²?
More quantitative aptitude practice
Number System · HCF & LCM · Simplification · Percentages · Profit & Loss · Simple & Compound Interest · Ratio & Proportion · Averages
LogicWiz Exams home · All practice topics · Placement mock tests · Daily 10 challenge