Question

if X equal to 3 under root 5 + 2 then value of x cube minus 6 X square + 12 x minus 13​

Answer 1

Answer:

First to add covert into decimal we need to convert into a single fraction

To get into single Fraction first we need to sum all the fractions (A.T.Q)

Answer :

Find L.C.M of denominators (i.e. 10,100 and 1000)

L.C.M = 10 × 10 × 10 × 1 × 1 × 1

= 1000

7/10 = 7 * 100/10 * 100

6/100 = 6 * 10/ 100 * 10

4/1000 = 4 * 1/ 1000 * 1

7/10 + 6/100 + 4/1000 = 700/1000 + 60/1000 + 4/1000

= 764/1000

= 0.764