Răspuns:
Explicație pas cu pas:
a)
=10√2
b)
=0
c)
=5*5√2+3√2
= 25√2+3√2
= 28√2
-
d)
= -5*2√7-3*5√7+3√7
=-10√7-15√7+3√7
= -25√7+3√7
= -22√7
-
2)
a)
=√6
b)
=12√5
c)
-12√14
-
3)
a)
=2*2
=4
-
b)
= - 108
c )
=9
d)
=9*7
=63
-
4)
a)
= 7√2
b)
=2√7
c)
8,(3) =(83-8)/9 = 75/9= 25/3
6,25= 625/100=25/4
25/3:25/4
=25/3*4/25
= 4/3
-
d)
=-4/5*(- 1/8)
= 1/10
-
e)
= 4√5-11√5
= - 7√5
-
f)
=(-8*3√3)- (-9 *3√3)
= -24√3-(-27√3)
= -24√3+27√3
= 3√3
