Question

Tinhs hợp lí nếu có thể :

A=-[-506+732-(-2000)]-(506-1732)

B=1037=Ơ[743-[1031-(+57)]}

C=(125.73-125.75):(-25.2)

D =25.(35+147)+35.(25+147)

E=(-3)²+(-5)³:|5|

Answer 1

C = (125 . 73 - 125 . 75) : (-25 . 2)

C = 125 . (75 - 73) : (-50)

C = 125 . 2 : (-50)

C = 250 : (-50)

C = (-5)

D = 25 . (35 + 147) + 35 . (25 + 147)

D = 25 . 35 + 25 . 147 + 35 . 25 + 35 . 147

D = (25 . 35 + 35 . 25) + (25 . 147 + 35 . 147)

D = 1750 + 147 . (25 + 35)

D = 1750 + 147 . 60

D = 1750 + 8820

D = 10570

E = (-3)² + (-5)³ : !5!

E = 9 + (-125) : 5

E = 9 + (-25)

E = (-16)

Answer 2

A = - [- 506 + 732 - (-2000)] - (506 - 1732)

A = 506 - 732 + 2000 - 506 + 1732

A = (506 - 506) + (1732 - 732) + 2000

A = 0 + 1000 + 2000

A = 3000

B = 1037 + {[743 - (1031 - 57)]}

B = 1037 + 743 - 1031 + 57

B = (1037 - 1031) + (743 + 57)

B = 6 + 800

B = 806

Answer 3

A=-[-506+732-(-2000)]-(506-1732)

A=506-732-2000-506+1732

A=(506-506)+(1732-732)-2000

A=0+1000-2000

A=(-1000)

Answer 4

D=25.(35+147)+35.(25+147)

D=(25.35+25.147)+(35.25+35.147)

D=25.35+25.147+35.25+35.147

D=147.(25+35)+35.(25+25)

D=147.60+35.50

D=8820+1750

D=10570

Answer 5

E=(-3)^2+(-5)^3:|5|

E=9+(-5)^3:5

E=9+5^2

E=9+25

E=34

Answer 6

C=(125.73-125.75):(-25.2)

C=125.(73-75):(-25.2)

C=125.2:-50

C=250:-50

C=-5