Question

if a = 2 + root 3 then find the value of a minus 1 by a​

Answer 1

hey mate

given here

a=2+√3.

find here

a-1/a

or

a-1/1a=?

first calculate

1/a=1/(2+√3)

=(2-√3)/(2+√3)(2-√3)

=(2-√3)/4-3

=2-√3.

now,

a-1/a=(2+√3)-(2-√3)

=2+√3-2+√3

=2√3.

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