NCERT Solution for Class 10 Mathematics Chapter 4 - Quadratic Equations

NCERT Solution for Class 10 Mathematics Chapter 4 - Quadratic Equations Page/Excercise 4.1

Question 1

Solution 1

Question 2

Solution 2

 

Concept Insight: Read the question carefully and choose the variable to represent what needs to found. Only one variable must be there in the final equation.

NCERT Solution for Class 10 Mathematics Chapter 4 - Quadratic Equations Page/Excercise 4.2

Question 1

Solution 1

Question 2

        (i)  John and Jayanti together have 45 marbles. Both of them lost 5 marbles each, and the product of the number of marbles they now have is 124. Find out how many marbles they had.

       (ii)        A cottage industry produces a certain number of toys in a day. The cost of production of each toy (in rupees) was found to be 55 minus the number of toys produced in a day. On a particular day, the total cost of production was Rs 750. Find out the number of toys produced on that day.

Solution 2

Question 3

Find two numbers whose sum is 27 and product is 182

Solution 3

Question 4

Solution 4

Question 5

Solution 5

Question 6

A cottage industry produces a certain number of pottery articles in a day. It was observed on a particular day that the cost of production of each article (in rupees) was 3 more than twice the number of articles produced on that day. If the total cost of production on that day was Rs 90, find the number of articles produced and the cost of each article.

Solution 6

NCERT Solution for Class 10 Mathematics Chapter 4 - Quadratic Equations Page/Excercise 4.3

Question 1

Solution 1

Question 2

Find the roots of the quadratic equations by applying the quadratic formula.

Solution 2

Question 3

Solution 3

Question 4

Solution 4

Question 5

Solution 5

Question 6

Solution 6

Question 7

Solution 7

Question 8

Solution 8

Concept Insight: Use the relation s =d/t to crack this question and remember here distance is constant so speed and time will vary inversely.

Question 9

Solution 9

Question 10

Solution 10

Question 11

Solution 11

NCERT Solution for Class 10 Mathematics Chapter 4 - Quadratic Equations Page/Excercise 4.4

Question 1

Solution 1

Question 2

Solution 2

Question 3

Is it possible to design a rectangular mango grove whose length is twice its breadth, and the area is 800 m²? If so, find its length and breadth.

Solution 3

Question 4

Solution 4

Question 5

Solution 5