Question

b) If x=1by2-root3
find the value of x^3-2x^2-7x+5​

Answer 1

Answer:

3/2

Step-by-step explanation:

x = 1/2- root3

put x in above equation

=> 1/8-6-4root3-3root3 - 2 - 7/2-root3 + 5

1/2- root3 - 7/2 - root 3 + 3

= -3/-2

= 3/2