计算 t 3 ÷ t 2 的结果是 ( )
t 2
t
t 3
t 5
计算 m 6 ÷ m 2 的结果是 ( )
m 3
m 4
m 8
m 12
下列运算正确的是 ( )
3 + 2 = 5
x 8 ÷ x 2 = x 6
3 × 2 = 5
( a 5 ) 2 = a 7
下列运算结果正确的是 ( )
( - a ) 3 = a 3
a 9 ÷ a 3 = a 3
a + 2 a = 3 a
a · a 2 = a 2
下列计算正确的是 ( )
a 2 b + 2 a b 2 = 3 a 3 b 3
a 6 ÷ a 3 = a 2
a 6 · a 3 = a 9
( a 3 ) 2 = a 5
a 2 + a 3 = a 5
a 6 ÷ a 2 = a 4
( 2 ab ) 3 = 6 a 3 b 3
a 2 · a 3 = a 6
a 2 + b 2 = ( a + b ) 2
a 2 + a 4 = a 6
a 10 ÷ a 5 = a 2
a 2 · a 3 = a 5
按一定规律排列的一列数:3,,,,,,,,,若,,表示这列数中的连续三个数,猜想,,满足的关系式是 .
3 a - a = 2
a · a 2 = a 3
a 6 ÷ a 2 = a 3
( 3 a 2 ) 2 = 6 a 4
a + a 2 = a 3
( - a 2 b ) 3 = a 6 b 3
( a - 2 ) ( a + 2 ) = a 2 - 4
8 a - 3 b = 5 ab
( a 2 ) 3 = a 5
a 2 · a = a 3
b 2 · b 3 = b 6
( a 2 ) 3 = a 6
- a 2 ÷ a = a
( a 3 ) 2 · a = a 6
下列各运算中,计算正确的是 ( )
a 2 · 2 a 2 = 2 a 4
x 8 ÷ x 2 = x 4
( x - y ) 2 = x 2 - xy + y 2
( - 3 x 2 ) 3 = - 9 x 6
a 2 · a 5 = a 10
( a - 2 ) 2 = a 2 - 4
( - a 2 ) 4 = a 8
a 3 + a 2 = a 5
a 3 ÷ a = a 3
( a 2 ) 4 = a 6