SOLUTION: Write the simplified form of
7^a+2 - 8(7^a+1) + 5(7^a) + 49(7^a-2)
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Question 197952: Write the simplified form of
7^a+2 - 8(7^a+1) + 5(7^a) + 49(7^a-2)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Note that
and
 = 7^2\cdot7^{a-2} = 7^{a-2+2}=7^a)
So:
 + 5(7^a) + 49(7^{a-2}) = 49\cdot7^a-56\cdot7^a+5\cdot7^a+7^a=-7^a)
John
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