ghi dấu nhé ><= 2 x 2 ... 2 x 3 2 x 9 ... 2 x 3 2 x 10 ... 2 x 9
2 câu trả lời
2×2...
2×2=4; 2×3=6
Vì 4<6⇒2×2<2×3
2 × 9 ... 2 × 3
2×9=18; 2×3=6
Vì 18>6⇒2×9>2×3
2 × 10 ... 2 × 9
2×10=20; 2×9=18
Vì 20>18⇒2×10>2×9
Đáp án:
+) \underbrace{2xx2}_{4}<\underbrace{2xx3}_{6}
+) \underbrace{2xx9}_{18}>\underbrace{2xx3}_{6}
+) \underbrace{2xx10}_{20}>\underbrace{2xx9}_{18}
