# CASE STUDY QUESTION 10-Class X-Maths

CASE STUDY QUESTION 10-Class X-Maths

**One day, due to heavy storm an electric wire got bent as shown in the figure. It followed some mathematical shape of curve. Answer the following questions below.**

**(a) How many zeroes are there for the polynomial (shape of the wire)**

(i) 2 (ii) 3 (iii) 4 (iv) 5

**Answer: **(ii) 3

**(b) Find the zeroes of the polynomial.**

(i) 2, 0, -2 (ii) 2, -2, -5

(iii) -2, 2, -5.5 (iv) None of these

**Answer: (iii) **-2, 2, -5.5

**(c) Find the quadratic polynomial whose zeros are 3 and -4.**

(i) x^{2} + 4x + 2 (ii) x^{2} + x – 12

(iii) x^{2} – 7x – 12 (iv) None of these

**(d) Name the type of expression of the polynomial in the above graph?**

(i) quadratic (ii) cubic (iii) linear (iv) bi-quadratic

**Answer: (i)**

**(e) If one zero of the polynomial x ^{2} – 2x – 3 is -4, then find the other zero.**

(i) 6 (ii) -6 (iii) 2 (iv) -2

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