Find the values of each of the following correct to three places of decimals, it being given that = 1.414, = 1.732, =2.236, = 2.4495 and = 3.162.

(i) (ii)

8

If x = 3+, find the value of x²+.

9

Find the value of , it being given that = 1.732 and =2.236

11

If x =, find the value of 4x³+2x²-8x+7.

1

Write the value of (2+) (2-).