**SUBJECT –** MATHS

**CLASS –**** X** (10th)

**QUESTION FROM –** Quadratic Equation (Exercise 4.2)

**ALL EXTRA & IMPORTANT QUESTION ANSWER FOR 2019 EXAMS**

##### Ex 4.2 – Quadratic Equation (Full Exercise Solution + Video) MATHS – NCERT | Class 10

**Q1. ****Find the roots of the following quadratic equations by factorisation:**

**(i) x ^{2} -3x – 10 = 0**

**(ii) 2x**

^{2}+ x – 6 = 0**(iii) √2x**

^{2}+ 7x + 5√2 = 0**(iv) 2x**

^{2}– x + = 0 8**(v) 100 x**

^{2}– 20 X + 1 = 0*Ex 4.2 Quadratic Equation (Q.1) Class 10 Maths NCERT Solution In Hindi*

**Question 2 :: Solve the following situations mathematically:**

(i) John and Jivanti together have 45 marbles. Both of them lost 5 marbles each and the product of the number of marbles they now have is 124. We would like to find out how many marbles they had to start with.

(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 ₹750. We would like to find out the number of toys produced on that day.

Answer – Please check back later on.

**Question 3 :: Find two numbers whose sum is 27 and product is 182.**

*Ex 4.2 Quadratic Equation (Q.3) class 10 Maths NCERT Solution In Hindi*

**Question 4 :: Find two consecutive positive integers, the sum of whose squares is 365.**

**Question 5 :: The altitude of a right triangle is 7 cm less than its base. If the hypotenuse is 13 cm, find the other two sides.**

**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 ₹90, find the number of articles produced and the cost of each article.

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