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) x2 + 4x + 2 (ii) x2 + x – 12
(iii) x2 – 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 x2 – 2x – 3 is -4, then find the other zero.
(i) 6 (ii) -6 (iii) 2 (iv) -2
