Odpowiedzi

2009-09-27T14:59:45+02:00
A) √18+4√2 = √9*2+4√2=3√2+4√2=7√2
2009-09-27T15:10:40+02:00
A) 9√2 + 4√2= 13√2
b) 3√24+2√54-√150= 3√6*4+2√6*9-√6*25=12√6+18√6-225√6=30√6-225√6 =-195√6
c) (√12+√147)÷√3= (√3*4 + √3*49)÷√3= (4√3+49√3)÷√3= 53√3÷√3= 53