Question

Calcule
A -7+(-7)²
B -2³-30+1
C (-⅔)³+1
D -5²+(-3)²-10
E (1-½)⁴+(1+½)-¹

Answer 1

A ) - 7 + ( - 7 )² = - 7 + 49 = 42

B ) - 2³ - 30 + 1 = - 8 - 29 = - 37

C ) ( - 2 / 3 )³ + 1 = - 8 / 27 + 1 = 19 / 27

D ) - 5² + ( - 3 )² - 10 = - 25 + 9 - 10 = - 26

E ) ( 1 - 1 / 2 )⁴ + ( 1 + 1 / 2 ) ^ - 1 = ( 1 / 2 )⁴ + ( 3 / 2 ) ^ - 1 = 1 / 16 + 2 / 3 = 3 + 32 / 48 = 35 / 48

Answer 2

a) -7+ 49=42

b) -8-30+1= -38+1=-37

c) -8/27+1= -8/27+ 27/27=19/27             colocar no mesmo denominador 

d)-25+9-10= -16-10=-26

e)   (1/2)⁴ + (3/2)⁻¹
       1/16+ 2/3= (mmc16,3)=48       

       3/48+32/48= 35/48