Question

Care este răspunsul ?

Answer 1

2(5+3rad2)-3(2+2rad2)=
10+6rad2-6-6rad2=
4

Answer 2

$2\cdot(5+\sqrt{18})-3 (2+\sqrt8) = \\ \\ = 10+2\sqrt{18}-6-3\sqrt8 = \\ \\ = 10+2\cdot (3\sqrt2)-6-3\cdot (2\sqrt2) = \\ \\ = 10+6\sqrt2-6-6\sqrt2 = \\ \\ = 4$