Question

5. Find the value of the polynomial 6x - 4x ^ 2 + 5xt (a) x = 0 (b) x = - 1 (c) x = 2 (d) x = - 5​

Answer 1

Step-by-step explanation:

The polynomial is 6x – 4x² + 5

a) at x = 0,

6*0 – 4*0² + 5 = 5

it is 5

b) at x = –1,

6*(–1) – 4(–1)² + 5

= –6 – 4 + 5

= –5

c) at x = 2,

6*2 – 4(2)² + 5

= 12 – 16 + 5

= 1

d) at x = –5,

6*(–5) – 4(–5)² + 5

= –30 – 100 + 5

= –125