Find the value of the polynomial 5x – 4x² + 3 at

(i) x = 0

(ii) x = –1

(iii) x = 2

Question

Find the value of the polynomial 5x &ndash; 4x 2 + 3 at (i) x = 0 (ii) x = &ndash;1 (iii) x = 2

Philoid · Accepted Answer

(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 = -6

(iii) p(x) = 5x - 4x² + 3

p (2) = 5(2) - 4(2)² + 3

= 10 – 16 + 3 = -3

Find the value of the polynomial 5x – 4x2 + 3 at(i) x = 0(ii) x = –1(iii) x = 2