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Lesson 13.6  Skills Practice
page 4
Choose which solution is correct.
c.
b.
9. a.
​3x​ ​ ​4x​ ​5 (3  ​4)(x​ ​​x​ ​)
2
3
2 3
​3x​ ​ ​4x​ ​5 (3  ​4)(x​ ​​x​ ​)
2
3
2 3
​3x​2​ ​4x​3​5 (3  ​4)(x​2​​x​3​)
5 ​(12)(x​213​)
5 ​(12)(x​223​)
5 (12)(​x23
​ ​)
5 ​(12)(x​5​)
5 ​(12)(x​21​)
5 ​(12)(x​6​)
5 ​12x​5​
12 ​ ​
5 ​ ​ ___
x   
5 ​12x​6​
The correct solution is a.
10. a.
b.
​25a​ ​ ​2a​
6
3
c.
​25a​ ​ ​2a​ ​
6
​25a​6​ ​2a​3​
3
5 (25  ​2)(a​6​​a3​ ​)
5 (25  ​2)(a​6​​a3​ ​)
5 (25  ​2)(a​6​​a3​ ​)
5 ​(210)(a​623​)
5 ​(210)(a​63​)
5 ​(210)(a​613​)
5 ​(210)(a​3​)
5 ​(210)(a​18​)
5 ​(210)(a​9​)
5 ​210a​3​
5 ​210a​18​
5 ​210a​9​
The correct solution is c.
( 4 )( ​m​​)
c.
( 4 )( ​m​​)
36 ​m​ ​
36​m​ ​ ___
______
 ​ 
5 ​​   ​   ​​____
 
​   ​  
 ​
​ 
36​m​ ​ ___
36 ​m​ ​
______
​ 
 ​ 
5 ​​   ​   ​​____
 
​   ​  
 ​
36 ​m​ ​
36​m​ ​ ___
______
 ​ 
5 ​​   ​   ​​____
 
​   ​  
 ​
​ 
5 ​(9)(m​1244​)
5 ​(9)(m​1224​)
5 ​(9)(m​1214​)
5 ​(9)(m​3​)
5 ​(9)(m​8​)
5 ​(9)(m​16​)
5 ​9m​3​
5 ​9m​8​
5 ​9m​16​
12
4​m​ ​
4
( 4 )( ​m​​)
b.
12
4
12
4​m​ ​
4
The correct solution is b.
916      •      Chapter 13      Skills Practice
12
4
12
4​m​ ​
4
12
4
© 2011 Carnegie Learning
11. a.
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