Question

g) (19²-17²) (10³ -15²); h) 20²-2-10² +10-2²; i) 20³ (16²-4²).​

Answer 1

Răspuns:

g) ( 361 - 289 ) ( 1000 - 225 ) = 55 800

72 • 775 = 55 800

h) 400 - 2 - 100 + 10 - 4 = 304

398 - 100 + 10 - 4 =

298 + 10 - 4 =

308 - 4 = 304

i) 8000 ( 256 - 16 ) = 1 920 000

8000 • 240 = 1 920 000