Question

mks
5. Factorise
(i) - 2x - x + 2
(ii) x - 3x2 - 9x - 5
(iii) x + 13x2 + 32x + 20
(iv) 2y + y2 - 2y - 1
if (x + 2) is a factor of x-2ax? - 5x + 6a, then find the value of a.
7.
For what value of k is the polynomial 2x4 + 3x + 2kx² + 3x + 6 exactly divisible by
(x + 2)?
8. Without actual division, prove that x4 + 2x - 2x2 + 2x - 3 is exactly divisible by
x + 2x-3.
9. If (x + 1) is a factor of x + 2x2 - 5x-6, then factorise it.
10) Without actual division, prove that (x - 2) is a factor of the polynomial
3r - 13 x + 8x + 12. Also, factorise it completely.​

Answer 1

Answer:

5(.1) -2x-x+2:- -3x+2

(2). x-3x2-9x-5:-. x -6-9x-5 ,-8x-11