Răspunsuri

2014-11-18T20:17:00+02:00
√32-5√128+6√8=4√2-5·8√2+6·2√2=4√2-40√2+12√2=
-36√2+12√2=-24√2
√32=√(4x4x2)=2x2x√2=4√2
√128=√(4x4x4x2=2x2x2x√2=8√2
√8=√(4x2)=2√2
2014-11-18T20:24:11+02:00
√32-5√128+6√8=√4²·2-5√8²·2+6√2²·2=
4√2-5·8√2+6·2√2=4√2-40√2+12√2=
-36√2+12√2=-24
√2