SOLUTION: Should be a simple expansion, but can't get through the working out. Expand: (n-2)^3+6(n-2)^2+12(n-2)+8
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Algebra: Expressions involving variables, substitution
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Question 9064
:
Should be a simple expansion, but can't get through the working out.
Expand:
(n-2)^3+6(n-2)^2+12(n-2)+8
Answer by
longjonsilver(2297)
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):
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(n-2)^3 expands to
6(n-2)^2 expands to
12(n-2) expands to 12n - 24
Add all these together together with the +8 term.
jon.
