Question 1/4
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 29
यदि (x=-1) समीकरण \(x^2+mx-6=0\) का हल है तो (m) का मान क्या होगा?
If (x=-1) is a solution of \(x^2+mx-6=0\), what is the value of (m)?
Explanation opens after your attempt
Step 1
Concept
Putting (x=-1) gives (1-m-6=0). So (-m-5=0) and (m=-5).
Step 2
Why this answer is correct
The correct answer is B. (-5). Putting (x=-1) gives (1-m-6=0). So (-m-5=0) and (m=-5).
Step 3
Exam Tip
(x=-1) रखने पर (1-m-6=0) मिलता है। इसलिए (-m-5=0) और (m=-5) है।
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Question 2/4
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 29
कौन सा मान \(x^2-25=0\) का एक हल है?
Which value is one solution of \(x^2-25=0\)?
Explanation opens after your attempt
Step 1
Concept
Since \(5^2-25=0\), (5) is a solution of this equation.
Step 2
Why this answer is correct
The correct answer is B. (5). Since \(5^2-25=0\), (5) is a solution of this equation.
Step 3
Exam Tip
\(5^2-25=0\) है। इसलिए (5) इस समीकरण का हल है।
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Question 3/4
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
यदि (x=1) है तो \(x^2+2x-3=0\) में बायां पक्ष कितना होगा?
If (x=1), what is the left side of \(x^2+2x-3=0\)?
Explanation opens after your attempt
Step 1
Concept
Substituting gives \(1^2+2\cdot1-3=0\). So (1) is a solution.
Step 2
Why this answer is correct
The correct answer is A. (0). Substituting gives \(1^2+2\cdot1-3=0\). So (1) is a solution.
Step 3
Exam Tip
रखने पर \(1^2+2\cdot1-3=0\) मिलता है। इसलिए (1) एक हल है।
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Question 4/4
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
कौन सा मान \(x^2-9=0\) का एक हल है?
Which value is one solution of \(x^2-9=0\)?
Explanation opens after your attempt
Step 1
Concept
Since \(3^2-9=0\), (3) is a solution. For easy questions, check by substitution.
Step 2
Why this answer is correct
The correct answer is B. (3). Since \(3^2-9=0\), (3) is a solution. For easy questions, check by substitution.
Step 3
Exam Tip
\(3^2-9=0\) इसलिए (3) हल है। आसान प्रश्नों में मान रखकर जांच करें।
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