What is the HCF of   (x4  - x2  - 6)    and   (x4  - 4x2  + 3) ?

(a)  x2  - 3                          (b)    x + 2

 (c)   x + 3                         (d)   x2  + 3

(7.01³ – 20.04) = ? + 7.98% of 5399.98

5555.05 + 500.05 + 5000.005 + 5.005 =?

3.99² + (3.01 × 2.98) + ? = 225.03

`sqrt(1279.98+sqrt(243.97+sqrt(140.22+sqrt(6.875+sqrt(76.09+sqrt(24.97)))))) = ? `

22.03 × 6.97 + 19.01 – 16.02 = ?

(10.01³ – 12.04) = ? + 7.98% of 4999.98

? = 23.08 + 19.99 × 28.07

[{(√785) % of 449.85}/(35.89 × 7.14 + 849.89 ÷ 5.12 + 199.78% of 41.09)] = ( 1/? ) 

56237.05 + 10616.99 - 137.25 + 1795.33 = ?

(519.98 + ?) ÷ 13.01 = √440 + 20.0