Question

a) (-5)²-(+10).(-8)
b) √225 ÷ (-1)10 + (-23)
c) {[(-40). (-20)]+[(+125)÷(-5)]}
d) {(-5-2)²÷(7) 1 +[90+√25].(-4)}
Me ajudem !​

Answer 1

Explicação passo-a-passo:

A) (-5)2 -(+10).(-8)

(25)-(-80)

25 +80

R:105

B)✓225 ÷(-1)10 +(-23)

15÷1 -23

15-23

R:-8

C){[(-40).(-20)]+[(+125)÷(-5)]}

{[800]+[-25]}

{800-25}

R:775

D){(-5-2)2 ÷(7)1 +[90+✓25].(-4)}

{(-7)2 ÷7+[90+5].(-4)}

{49÷7+95.(-4)}

{7 -380}

R: -373