Răspuns:
Explicație pas cu pas:
1)
a)
= 4-12
= -8
-
b)
= -3-7
=-10
-
c)
=7-5
=2
-
d)
= -6-8
=-14
-
-
2)
a)
= -30
b)
=21
-
c)
=-6
-
d)
= 648
-
3)
a)
= 49
-
b)
=-8
c)
= 1
-
d)
= 36
-
-
4)
a)
= (7+12) - ( 5+20)
=19- 25
= - 6
-
b)
= -3 * [ 2- 36:9] - 2* [ 6+8]
= -3 * [ 2-4 ] -2 * 14
= -3 * [(-2) - 28]
=-3 * (-30)
= 90
-
c)
= [ (-5)²*(-5)⁴* ( -5)³]⁵:(-5)⁴³
=[ ( 5⁶*(-5)³]⁵: (-5 )⁴³
=
=(-5⁶⁺³ ) ⁵:(-5)⁴³
= (-5⁹)⁵:((-5)⁴³
=(-5)⁴⁵:(-5)⁴³
=(-5)⁴⁵⁻⁴³
= -5²
= 25
-
d)
= ( 5-3)*3
= 2*3
=5
-
e)
=[( -3)²⁹⁻²⁸-10 )} : 13+1
=(-3-10) :13+1
= -13:13+1
=-1+1
= 0
-
