Question

resolva as seguintes expressões: a) -3+(-4)³ : [(-2-3)²:(-5)-(-3)²]
b){-2²:4+[(-2-5)² : 3]}
c)[(1-2/3)²-2/3:1/5]=[(3-2/3)² - 2/3 vezes 5/1]
Por favor calculo =)

Answer 1

        a)
                 $-3+(-4)^3:[(-2-3)^2:(-5)-(-3)^2] \\ \\ =-3+(-64):[(-5)^2:(-5)-(9)] \\ \\= -3+(-64):[(25):(-5)-9] \\ \\ =-3+(-64):[-5-9] \\ \\ =-3+(-64):[-14] \\ \\ =-3+ \frac{64}{14} \\ \\ =- \frac{42}{14} + \frac{64}{14} \\ \\ = \frac{22}{14} \\ \\ = \frac{11}{7}$

        b)
                 $[-2^2:4+[(-2-5)^2:3]] \\ \\ =[-4:4+[(-7)^2:3]] \\ \\ =[-1+[49:3]] \\ \\ =[-1+ \frac{49}{3} ] \\ \\ =[- \frac{3}{3} + \frac{49}{3} ] \\ \\ = \frac{46}{3}$