Question

Ajutati-ma cu tema la mate

Answer 1

d)  folosind relatia (a-b)(a+) = a patrat - b patrat rezulta 
(9-24)+( 5+ 2radical5+ 1)=
-15+ 6 + 2radical5=  -9+ 2 radical5
F)
(1+ 8radical3+ 48)- (-4 +50)=
49+ 8radical3 -46=
3+ 8radical3