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Murrr4er [49]
3 years ago
10

Evaluate the expression when x=6 3x +7

Mathematics
1 answer:
Brums [2.3K]3 years ago
8 0
3(6) + 7    
  ^
18 + 7= 25
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UNO [17]
\bf 3^{n+2}-3^n=8\cdot 3^n\implies \boxed{3^n\cdot 3^2}-3^n=8\cdot 3^n
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\stackrel{common~factor}{3^n}(3^2-1)=8\cdot 3^n\implies 3^2-1=\cfrac{8\cdot \underline{3^n}}{\underline{3^n}}\implies 3^2-1=8
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