Question

1 spra 4 minus 2 radical 3 minus radical din 3 supra 2 +1

Answer 1

1/(4-2√3) -√3/2  +1 =
=(4+2√3)/(4-2√3)(4+2√3)-√3/2  +1 =
=(4+2√3)/(16-12)-√3/2  +1 =
=(4+2√3)/4-√3/2  +1 =
=2(2+√3)/4-√3/2  +1 =
=(2+√3)/2-√3/2  +1 =
=1+√3/2-√3/2+1 =
=2