Răspuns :
a)radical4+radical1=4-1
2+1=3
3=3 "A"
b)radical9+radical4=9-4
3+2=5
5=5 "A"
c)radical16+radical9=16-9
4+3=7
7=7 "A"
d)radical(x+1)^2+radicalx^2=(x+1)^2-x^2
x+1+x=x^2+2x+1-x^2
2x+1=2x+1
1=1 "A"
2+1=3
3=3 "A"
b)radical9+radical4=9-4
3+2=5
5=5 "A"
c)radical16+radical9=16-9
4+3=7
7=7 "A"
d)radical(x+1)^2+radicalx^2=(x+1)^2-x^2
x+1+x=x^2+2x+1-x^2
2x+1=2x+1
1=1 "A"