tolong dijawab!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

7√2 + 2√8+√18=
=7√2+2√4•2+√9•2
=7√2+2•2√2+3√2
=7√2+4√2+3√2
smpek situ udh bisa hitung sendiri kan?
#biar paham juga..