Concept-wise Practice

standard-condition MCQ Questions for Class 10

standard-condition se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with standard-condition.

Question 1/1 Hard Mathematics Quadratic Equations Roots of a Quadratic Equation Class 10 Level 33

सामान्य द्विघात समीकरण \(ax^2+bx+c=0\) में जड़ें समान हों, तो सही संबंध कौन-सा है?

For the general quadratic equation \(ax^2+bx+c=0\), which relation is correct when the roots are equal?

Explanation opens after your attempt
Correct Answer

A. \(b^2=4ac\)

Step 1

Concept

For equal real roots, the discriminant \(D=b^2-4ac=0\). Therefore \(b^2=4ac\) is the correct relation.

Step 2

Why this answer is correct

The correct answer is A. \(b^2=4ac\). For equal real roots, the discriminant \(D=b^2-4ac=0\). Therefore \(b^2=4ac\) is the correct relation.

Step 3

Exam Tip

समान वास्तविक जड़ों के लिए विविक्तकर \(D=b^2-4ac=0\) होता है। इसलिए \(b^2=4ac\) सही संबंध है।

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