Question

POLYNOMIALS
page no:- 33
EXERCISE 2.2
1. Find the zeroes of the following quadratic polynomials and verify the relationship between
the zeroes and the coefficients.
(i) x2 - 2x -8
(ii) 4s2-4s+ 1
(iii) 6x2 – 3-7x
(iv) 4u2 + 8u
(v) t2 - 15
(vi) 3x2 – X-4​

Answer 1

Answer:

1) the zeros are

x^2-2x-8=o

x^2-4x+2x-8=0

(x is common in first two terms)(2 is common in third and fourth terms)

x(x-4)+2(x-4)=0

(x-4)(x+2) =0

therefore zeros are (4,-2)

2) zeros are (2,2)

3) zeros are (9,-2)

4)zeros are (0,-2)

5)zeros are (√15,-√15)

6) zeros are (4,-3)