Q.1. Find the value of the polynomial at 5x + 4x2 + 3 at

(i) x = 0 (ii) x = - 1 (iii) x = 2

Solution:

(i) p(x) = 5x + 4x2 + 3

p(0) = 5(0) + 4(0)2 + 3

= 3

(ii) p(x) = 5x + 4x2 + 3

p(-1) = 5(-1) + 4(-1)2 + 3

= -5 + 4(1) + 3

= 2

(iii) p(x) = 5x + 4x2 + 3

p(2) = 5(2) + 4(2)2 + 3

= 10 + 16 + 3

= 29