判断题(对的打“√”,错的打“×”): (1)x 3 ·x 5 =x 15 ; [ ] (2)x 3 ·x 5 =x
判断题(对的打“√”,错的打“×”):(1)x3·x5=x15;[](2)x3·x5=x8;[](3)x3+x5=x8;[](4)x2·x2=2x4;[](5)a3·a2...
判断题(对的打“√”,错的打“×”): (1)x 3 ·x 5 =x 15 ; [ ] (2)x 3 ·x 5 =x 8 ; [ ] (3)x 3 +x 5 =x 8 ; [ ] (4)x 2 ·x 2 =2x 4 ; [ ] (5)a 3 ·a 2 -a 2 ·a 3 =0; [ ] (6)y 7 +y 7 =y 14 。 [ ]
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