Explicație pas cu pas:
b) x=3-4=-1
c)×= radical din 8=2 radical din 2
x=2 radical din 2
d)×=1/30
f)×=-1-0,3=-1,3
g)×=6•2=12
h)-×=5
×=-5
i)×=16^2=256
k)×= radical din 5
l)×=-(1/2):3/4=-(1/2)•4/3=-(2/3)
×=-(2/3)
m)×=-2:6=-(2/6)=-(1/3)
×=-(1/3)
n)×= radical din 12= 2 radical din 3
×= 2 radical din 3
o) -×=-6+3=3
×=3
p)×=3;-3[ deoarece 3^2=9 ; (-3)^2=9]
q)×=-(3/4):[-(1/6)]=3/4•6=9/2
×=9/2
r) ×=0,2•0,6=2/10•6/10=1/5•3/5=3/25
×=3/25
