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3 votes
The area of a rectangle is n^2+6n-27. One side of the rectangle is n + 9. What is the length of the

remaining side?

User Lebenf
by
6.5k points

1 Answer

6 votes


n^2 +6n-27 = n^2+6n-27+0\\~\\n^2+6n-27+0 = n^2+6n-27+(3n-3n) \\~\\n^2+6n-27+(3n-3n) = n^2+9n-3n-27\\~\\n^2+9n-3n-27 = n\cdot(n+9)-3\cdot(n+9) \\~\\n\cdot(n+9)-3\cdot(n+9) = (n+9)(n-3)

The other side is n-3

User Simon Bridge
by
6.7k points
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