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\frac{1}{2}n\left(-1-5n\right)
Add -3 and 2 to get -1.
\frac{1}{2}n\left(-1\right)+\frac{1}{2}n\left(-5\right)n
Use the distributive property to multiply \frac{1}{2}n by -1-5n.
\frac{1}{2}n\left(-1\right)+\frac{1}{2}n^{2}\left(-5\right)
Multiply n and n to get n^{2}.
-\frac{1}{2}n+\frac{1}{2}n^{2}\left(-5\right)
Multiply \frac{1}{2} and -1 to get -\frac{1}{2}.
-\frac{1}{2}n+\frac{-5}{2}n^{2}
Multiply \frac{1}{2} and -5 to get \frac{-5}{2}.
-\frac{1}{2}n-\frac{5}{2}n^{2}
Fraction \frac{-5}{2} can be rewritten as -\frac{5}{2} by extracting the negative sign.
\frac{1}{2}n\left(-1-5n\right)
Add -3 and 2 to get -1.
\frac{1}{2}n\left(-1\right)+\frac{1}{2}n\left(-5\right)n
Use the distributive property to multiply \frac{1}{2}n by -1-5n.
\frac{1}{2}n\left(-1\right)+\frac{1}{2}n^{2}\left(-5\right)
Multiply n and n to get n^{2}.
-\frac{1}{2}n+\frac{1}{2}n^{2}\left(-5\right)
Multiply \frac{1}{2} and -1 to get -\frac{1}{2}.
-\frac{1}{2}n+\frac{-5}{2}n^{2}
Multiply \frac{1}{2} and -5 to get \frac{-5}{2}.
-\frac{1}{2}n-\frac{5}{2}n^{2}
Fraction \frac{-5}{2} can be rewritten as -\frac{5}{2} by extracting the negative sign.