CASE STUDY QUESTION 2-Class X-Maths

**One day, due to heavy storm an electric wire got bent as shown in the figure. It followedsome 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

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

(i) 2, 0, -2

(ii) 2, -2, -5

(iii) -2, 2, -5.5

(iv) None of these

**(c) Find the quadratic polynomial whose zeroes 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?**

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

**(e) If one zero of the polynomial x ^{2} – 5x – 6 is 6 then find the other zero.**

(i) 1 (ii) -1 (iii) 2 (iv) -2

**Answers:**

i**i, i, ii, i, ii**

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