Did I do this correctly?

C

Casey Daniels

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Oct 8, 2013
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8
Okay it states simplify

a2n - b2n.............an^2 - bn^2.........(an - bn)(an + bn)
-----------...... = ----------=.......=--------------------= an + bn
an - bn ...............an - bn....................an - bn.........


Thank You
 
Casey Daniels said:
Okay it states simplify

a2n - b2n...... (an)^2 - ( bn)^2........(an - bn)(an + bn)
-----------...... = ----------=.......=--------------------= an + bn
an - bn ...............an - bn....................an - bn.........


Thank You
Click to expand...
looks right to me
if you also say ...
a ≠ b and n ≠ 0
 
Last edited:
Casey Daniels said:
Because if you have (x3)2 you would mutiple them to get x6

so a2n is 2 *n so I figured it would be the same as (an)2


Is my reasoning wrong?
Click to expand...

Your reasoning is not wrong - but you expressed it wrong. You should have written:


a2n - b2n.............(an)2 - (bn)2.........(an - bn)(an + bn)
-----------...... = ----------=.......=--------------------= an + bn
an - bn ...............an - bn....................an - bn.........


Otherwise, you were correct.
 
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