Question

Q19. CASE STUDY BASED-3
Due to heavy storm an electric wire got bent as shown in the figure. followed
a mathematical shape. Answer the following questions below.
(Name the shape in which the wire is bent
a) Spiral b) ellipse c) linear d) Parabola
(ii)How many zeroes are there for the polynomial (shape of the wire)
a) 2 b)3 d) 1 d) 0
(iii) The zeroes of the polynomial are
a)-1,5
b)-1,3
c) 3,5
d) -4,2
(iv)What will be the expression of the polynomial?
a) x2+2x-3
b) x2 -2x +3
c) x2 - 2x-3
d) x2 +2x3
(v)What is the value of the polynomial if x = -12
a) 6
b) -18
c) 18
d) 0​

Answer 1

Answer:

this is the answer for your question

Step-by-step explanation:

as per the figure this is the correct answer

Answer 2

Answer:

(i) parabola

(ii) (a) 2

(iii) (b) (-1,3)

(iv) (c) x²-2x-3

(v) (d) 0

Step-by-step explanation:

(ii) pints of intersection at x-axis

(iv) α=-1 β=3

α+β= -1 + 3 = 2

αβ = -1 x 3 = -3

x² - (α+β)X + αβ

=⟩ x² - (2)x +(-3)

x² - 2x - 3

(v) p(x) = x²- 2x - 3

p(-1) = (-1)² - 2(-1) - 3

= 1 + 2 - 3 = 0