Question 1/3
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 30
द्विघात समीकरण \(ax^2+bx+c=0\) का विवेचक क्या होता है?
What is the discriminant of \(ax^2+bx+c=0\)?
#quadratic-equations
#discriminant
#introduction
A \(a^2-4bc\)
B \(b^2+4ac\)
C \(b^2-4ac\)
D \(c^2-4ab\)
Explanation opens after your attempt
Correct Answer
C. \(b^2-4ac\)
Step 1
Concept
The discriminant is \(D=b^2-4ac\). Remembering it helps in understanding the nature of roots.
Step 2
Why this answer is correct
The correct answer is C. \(b^2-4ac\). The discriminant is \(D=b^2-4ac\). Remembering it helps in understanding the nature of roots.
Step 3
Exam Tip
विवेचक \(D=b^2-4ac\) होता है। इसे याद रखने से मूलों की प्रकृति समझना आसान होता है।
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Question 2/3
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 30
द्विघात समीकरण का सामान्य रूप कौन-सा है?
What is the general form of a quadratic equation?
#quadratic-equations
#introduction
#standard-form
#easy
A \(ax^2+bx+c=0,\ a\neq 0\)
B (ax+b=0)
C \(ax^3+bx+c=0\)
D \(\frac{a}{x}+b=0\)
Explanation opens after your attempt
Correct Answer
A. \(ax^2+bx+c=0,\ a\neq 0\)
Step 1
Concept
A quadratic equation has highest power (2) of (x) and \(a\neq 0\). In exams identify the standard form first.
Step 2
Why this answer is correct
The correct answer is A. \(ax^2+bx+c=0,\ a\neq 0\). A quadratic equation has highest power (2) of (x) and \(a\neq 0\). In exams identify the standard form first.
Step 3
Exam Tip
द्विघात समीकरण में (x) की सबसे बड़ी घात (2) होती है और \(a\neq 0\) होता है। परीक्षा में पहले मानक रूप पहचानें।
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Question 3/3
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
निम्न में से कौन सा समीकरण द्विघात समीकरण है?
Which of the following equations is a quadratic equation?
#quadratic equations
#introduction
#identification
A \(x^2+3x+2=0\)
B (2x+5=0)
C \(x^3+x=0\)
D (7=0)
Explanation opens after your attempt
Correct Answer
A. \(x^2+3x+2=0\)
Step 1
Concept
A quadratic equation has highest power (2) of (x). In exams first check the degree.
Step 2
Why this answer is correct
The correct answer is A. \(x^2+3x+2=0\). A quadratic equation has highest power (2) of (x). In exams first check the degree.
Step 3
Exam Tip
द्विघात समीकरण में (x) की सबसे बड़ी घात (2) होती है। परीक्षा में सबसे पहले घात देखें।
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