Class 11 Mathematics 4-2.Quadratic Equations and Inequations Solution of quadratic equations and Nature of roots

Easy

The expression $x^2 + 2bx + c$ has a positive value for all real $x$ if:

A
$b^2 - 4c > 0$
B
$b^2 - 4c < 0$
C
$c^2 < b$
D
$b^2 < c$

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Class 11

Mathematics Questions

Chapter

4-2.Quadratic Equations and Inequations

Subtopic

Solution of quadratic equations and Nature of roots

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