Question

9. Evaluate: (x - 4)3 + 6(x – 4)2 + 12(x - 4) + 8 when x = 3.2.​

Answer 1

The above can be factories as (x-4+2)^3

(x-2)^3= 1.728

Answer 2

Step-by-step explanation:

putting the value of x in the equation, we get

(3.2 - 4 ) 3 + 6 (3.2 - 4) + 12 ( 3.2 - 4 ) + 8

= (0.8)3 + 6(0.8) + 12 ( 0.8) + 8

= 2.4 + 4.8 + 9.6 + 8

= 24.8