5 - 3 per 1 + √2 Pliss jawab!!!

5 - (3/(1+akr 2)
= (5(1+akr 2) - 3 ) : (1+akr 2)
= (5 -3 + 5 akr 2) : (1+akr 2)
= (2 + 5 akr 2) : (1 +akr 2)
kalikan sekawan
=(2+5 akr 2 ) x (1-akr 2) per (1+akr 2 ) x (1-akr 2)
=(2-2akr 2 +5 akr 2 - 10 ) per 1 - 2
= (-8 + 3 akr 2 ) per -1
=8-3akr 2