下列运算结果为 a 6 的是 ( )
a 2 ⋅ a 3
a 12 ÷ a 2
( a 3 ) 2
( 1 2 a 3 ) 2
下列计算正确的是 ( )
a 3 ⋅ a 2 = a 6
a 2 + a 2 = a 4
( a 3 ) 2 = a 5
a 3 a 2 = a ( a ≠ 0 )
a 3 ÷ a 3 = a 6
a 3 ⋅ a 3 = a 6
( a 3 ) 3 = a 6
( a b 3 ) 2 = a b 6
a 3 + a 2 = a 5
a 3 ÷ a 2 = a
3 a 3 ⋅ 2 a 2 = 6 a 6
( a - 2 ) 2 = a 2 - 4
下列运算正确的是 ( )
7 a 3 - 3 a 2 = 4 a
( a 2 ) 3 = a 5
a 6 ÷ a 3 = a 2
- a ( - a + 1 ) = a 2 - a
a 2 ⋅ a = a 3
5 a - 4 a = 1
( 2 a ) 3 = 6 a 3
a 5 + a 5 = a 10
- 3 ( a - b ) = - 3 a - 3 b
( ab ) - 3 = a b - 3
a 6 ÷ a 2 = a 4
2 a - a = 2
( a - 1 ) 2 = a 2 - 1
( 2 a 3 ) 2 = 4 a 6
A. a 2 + a 3 = a 5 B. a 2 · a 3 = a 5 C. a 3 ÷ a 2 = a 5 D. ( a 2 ) 3 = a 5
3 xy - xy = 2
x 3 · x 4 = x 12
x - 10 ÷ x 2 = x - 5
( - x 3 ) 2 = x 6
A. a 2 · a 3 = a 6 B. a 6 ÷ a - 2 = a - 3
C. ( - 2 a b 2 ) 3 = - 8 a 3 b 6 D. ( 2 a + b ) 2 = 4 a 2 + b 2
A. 6 a - 5 a = 1 B. a 2 · a 3 = a 5 C. ( - 2 a ) 2 = - 4 a 2 D. a 6 ÷ a 2 = a 3
A. a 3 · a 2 = a 6 B. ( a 3 ) 2 = a 5 C. a 6 ÷ a 3 = a 3 D. a 2 + a 3 = a 5
计算 ( - a ) 6 ÷ a 3 的结果是 ( )
A. - a 3 B. - a 2 C. a 3 D. a 2
A. x 2 · x 3 = x 6 B. x 6 ÷ x 3 = x 3 C. x 3 + x 3 = 2 x 6 D. ( - 2 x ) 3 = - 6 x 3