Question

va rog ajutatima dau coroană

Answer 1

Răspuns:

Explicație pas cu pas:

9 × 144 = (10 - 1) × 144

= 10 × 144 - 1 × 144

= 1440 - 144

= 1296

11 × 148 = (10 + 1) × 148

= 10 × 148 + 1 × 148

= 1480 + 148

= 1628

9 × 314 = (10 - 1) × 314

= 10 × 314 - 1 × 314

= 3140 - 314

= 2826

11 × 921 = (10 + 1) × 921

= 10 × 921 + 1 × 921

= 9210 + 921

= 10131

9 × 275 = (10 - 1) × 275

= 10 × 275 - 1 × 275

= 2750 - 275

= 2475

11 × 363 = (10 + 1) × 363

= 10 × 363 + 1 × 363

= 3630 + 363

= 3993