Home › ICSE Class 10 › Mathematics › Quadratic Equations › The discriminant of 2x^2 + 5x + 3 = 0 equals
The discriminant of 2x^2 + 5x + 3 = 0 equals
A9
B0
C1
D25
Answer & Solution
Correct answer: C. 1
1. Here a = 2, b = 5, c = 3.
2. D = b^2 - 4ac = 25 - 24.
3. So D = 1.
4. Hence the discriminant is 1.
_Source: Selina Concise Mathematics Class 10, Ch 5 Quadratic Equations (Mistral OCR'd PDF), section on discriminant_
Related questions
The study of inequalities is described as useful in solving problems in science and:A firm needing at least 6 units and at most 10 would write that as a:Which sign makes a statement an inequality rather than an equation?Unless stated otherwise, inequalities in that chapter are solved over the set of:The set of all values of the variable that make an inequality true is called its:Solving 4x plus 3 less than 6x plus 7 gives:When x is a real number in that inequality, the solution set is written as:When x is an integer in that inequality, the largest solution is: