Question

. 4. Find the zero of polynomial:- (i) x - 3 (ii) 2x+7 (iii) 5x-3 5. Find P(0), P(1), P(2), P(-1), P(-2) of p(x) = 3x2 - 5x + 2 6. Factorize:- (i) 3x2 - x - 4 (ii) 3x2 - 11x - 4 (iii) 2x2 + 2x - 84 (iv) 2x2 - 11x + 14 7. Factorize (or) Find all the factors of :- 3x3 - 4x2 - 12x + 16 8. Factorize 2x3 - 3x2 - 17x + 30 if (x-2) is a factor.

Answer 1

4.(i) x-3

f(x) =0

f(x) =x-3

0=x-3

x-3=0

x=3ans.

(iii) 5x-3

f(x) =0

f(x) =5x-3

0= 5x-3

5x-3= 0

5x= 3

x= 3/5 ans.

(ii) 2x+7

f(x) =0

f(x) =2x+7

0= 2x+7

2x+7=0

2x= -7

x= -7/2