Question

Q.7(a) (i) 6 - 5y - y2
(ii) a2 + 46a + 205
(iii) ab + ac-b2 – bc
(b) (i) 73 x2 + 11x + 6 13
(ii) 4 13 x2 + 5x – 2/3
(c) (i) xºy2 - xy - 72
(ii) x4 - 5x2 + 4
(iii) (x2 - 4x) (x2 - 4x - 1) – 20
(d) (i) 2x3 - 3x2 – 17x + 30
(ii) x3 – 6x2 + 11x – 6
(iii) x3 + x2 - 4x - 4​

Answer 1

Answer:

(A) 1. =−y2−5y+6

     2. (a+5)(a+41)

(b) 1. 73x2+11x+613

     2. 73x2+11x+613

(c)  1. (y-12)(y-6) = 0

     2. (x+1)(x−1)(x+2)(x−2)

     3. (x+1)(x−2)(x−2)(x−5)

(d)  1.     (x−2)(x+3)(2x−5)

     2. (x−1)(x−2)(x−3)

     3. (x+1)(x+2)(x−2)  

Step-by-step explanation: