Question

If x+underrot 15 equal 4 ,then x+1by x equal to

Answer 1

Answer:

8

Step-by-step explanation:

x+root15=4

x=4-root15

1/x=1/4-root15

rationalize it

1/x=1/4-root15 * 4+root15/4+root15

1/x= 4+root15/16-15

1/x=4+root15

adding x+1/x

=4-root15+4+root15

=8