Question

(√15+√12)(√12−√15) / (√8+√2)(√8−√2)

Answer 1

(√12+√15)(√12−√15) / (√8+√2)(√8−√2)=(√12^2-√15^2) / (√8^2−√2^2)=(12-15)/(8-2)=-3/6=-1/2=-0,5