Question

AM NEVOIE DE AJUTOR !!!​

Answer 1

Răspuns:

7) [ (3)⁴* 3⁶] :3³: (-3)⁴ + (-3)³= 3⁴⁺⁶: 3³: (-3)⁴ +(-3)³ = 3¹⁰: 3³:(-3)⁴+ (-3)³= 3⁷:(-3)⁴+(-3)³= -3⁷⁻⁴ + (-3)³= (-3)³ +(-3)³= -27 -27= 2*(-3)³=-54

8)[ (-2)¹²:2⁶ -15] - (-7)²=[ (-2)¹²⁻⁶ -15] -49= [(-2)⁶ -15]-49= (64-15)-49=49-49=0

9) (4+12)*[(-3)⁴⁹+3³⁺⁴⁶ +(-2)¹⁴⁵⁻⁹⁰ +2⁵⁵-25]= 16*[(-3)⁴⁹ +3⁴⁹ +(-2)⁵⁵ +2⁵⁵ -25]=

16*(0+0 -25)= 16*(-25)= -400

10) (-1)*1*(-1) *1*(-1) *...*(-1)*1*(-1)*1= (-1)*(-1)*(-1)*(-1) *...(-1)*(-1) ( de 2020:2 de 1010 ori)  =  1*1*...*1  ( de 505 ori) = 1

11) [ (-2*)⁷* 9⁷ :2⁷*3¹⁴ +2 ]¹⁹ = [(-2)⁷*3¹⁴: 2⁷*3¹⁴ +2]¹⁹= (-1 +2)¹⁹= 1¹⁹=1

12)  2²⁴ :2²⁰ + 3⁸: 3⁵ - 1*1- 3*(2³⁺²- 3³)= 2⁴ + 3³ -1 -3*(2⁵-27)=

=16+27-1- 3*(32-27)= 43-1- 3*5= 42-15= 27= 3³