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Algebra Homework Help : Expansion of (a + b + c)2


 Expand each of the following and type only the expanded answer in the input box.
Leave no spaces when typing the answer.
EXAMPLE: (2x + 3y + 4z)2 = 4x2+9y2+16z2+12xy+24yz+16xz
Since there are multiple ways of writing an answer, it is possible a correct answer may be marked wrong.
So, please always check the explanation.


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1.

(x + y + 7)2
 
Hint      

2.

(x + y - 9)2
 
Hint      

3.

(x - 5 + z)2
 
Hint      

4.

(x - 6 - z)2
 
Hint      

5.

(11 - 5p - 8q)2
 
Hint      

6.

(7m - 6 + 5n)2
 
Hint      

7.

(8x + y - 4)2
 
Hint      

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