Question

determinati x:
radical din x =15
radical din x-2=16
7+radical din x=12

Answer 1

1)√x=15|^2
x=15^2
x=225
^inseamna putere aici
2)√(x-2)=16|^2
x-2=256
x=258
3)7+√x=12
√x=12-7
√x=5|^2
x=25