Question

Me ajudem urgentemente !

Answer 1

a) 65 - {30 - [20 - (10 - 1 + 6) + 1]}
65 - {30 - [20 - 15 + 1]}
65 - {30 - 6}
65 - 24
41

b) 26 + {12 - [(30 - 18) + (4 - 1) - 6] - 1}
26 + {12 - [12 + 3 - 6] - 1}
26 + {12 - 9 - 1}
26 + 2
28

c)(√18 + √98 + √200)/(2√2 + √8)
(√9.√2 + √49.√2 + √100.√2)/(2√2 + √4.√2)
(3√2 + 7√2 + 10√2)/(2√2 + 2√2)
(20√2)/(4√2)
20/4
5

d)(10√27 + 10√3)/(10√3)
(10.√9.√3 + 10√3)/(10√3)
(10.3√3 + 10√3)/(10√3)
(30√3 + 10√3)/(10√3)
(40√3)/(10√3)
40/10
4

e) (-2.[-½-(-3)])/((3/2) + ([½-(3)].2))
(-2.[-½+3])/((3/2) + ([-5/2].2))
(-2.[5/2])/((3/2) + (-5))
(-5)/((3/2) - 5)
(-5)/(-7/2)
5/(7/2)
(5.2)/7
10/7