Question

g) (192-17): (109–152); h) 202 - 2.102 +10-22; i) 20 - (16? - 42).​

Answer 1

Răspuns:

g) = (361-289)·(1000-225)=72·775=55800

h) =400-2·100+10·4=400-200+40=240

i) = 8000·(256-16)=8000·240=1920000

Answer 2

Explicație pas cu pas:

ღSalutare!ღ

g) (19²-17²)×(10³-15²) =

= (361-289)×(1 000-225) =

= 72×775 =

= 55 800

Obs!

19²=19×19=361

17²=17×17=289

10³=10×10×10=1 000

15²=15×15=225

h) 20²-2×10²+10×2² =

= 400-2×100+10×4 =

= 400-200+40 =

= 200+40 =

= 240

Obs!

20²=20×20=400

10²=10×10=100

2²=2×2=4

i) 20³×(16²-4²) =

= 8 000×(256-16) =

= 8 000×240 =

= 1 920 000

Obs!

20³=20×20×20=8 000

16²=16×16=256

4²=4×4=16

Succes!;)