Saved Bookmarks
| 1. |
POLYNOMIALSpage no:- 33EXERCISE 2.21. Find the zeroes of the following quadratic polynomials and verify the relationship betweenthe 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» 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) |
|