下列各式中,计算正确的是 ( )
a 3 · a 2 = a 6
a 3 + a 2 = a 5
a 6 ÷ a 3 = a 2
( a 3 ) 2 = a 6
下列各式计算正确的是 ( )
x + x 2 = x 3
( x 2 ) 3 = x 5
x 6 ÷ x 2 = x 3
x · x 2 = x 3
下列运算中正确的是 ( )
a 5 + a 5 = a 10
a 7 ÷ a = a 6
( - a 3 ) 2 = - a 6
下列计算结果是 x 5 的为 ( )
x 10 ÷ x 2
x 2 · x 3
( x 2 ) 3
x 6 - x
下列计算正确的是 ( )
a 2 + a 3 = a 5
a 8 ÷ a 4 = a 4
( - 2 ab ) 2 = - 4 a 2 b 2
( a + b ) 2 = a 2 + b 2
下列四个算式中,正确的是 ( )
a + a = 2 a
a 5 ÷ a 4 = 2 a
( a 5 ) 4 = a 9
a 5 - a 4 = a
a 6 + a 6 = a 12
a 6 × a 2 = a 8
a 6 ÷ a 2 = a 3
( a 6 ) 2 = a 8
( a 2 ) 3 = a 5
a 6 ÷ a 2 = a 4
计算 a 6 ÷ a 3 ,正确的结果是 ( )
2
3 a
a 2
a 3
计算 a 5 ÷ a 3 结果正确的是 ( )
a
a 4
计算 x 6 ÷ x 2 正确的是 ( )
3
x 3
x 4
x 8
a 2 · a = a 2
a 2 b - 2 b a 2 = - a 2 b
( - 3 2 a ) 3 = - 9 8 a 3
2 a × 3 a = 5 a
( - 2 a ) 3 = - 6 a 3
6 a ÷ 2 a = 3 a
( - a 3 ) 2 = a 6
a 2 · a 3 = a 6
a 3 ÷ a 2 = a