October 2018 2 119 Report
$\begin{align}11.)~\frac{x - 3}{x - 2}\times \frac{x^2 - x - 2}{x^2 + x - 12} = ..... $\end{align}

$\begin{align}12.)~25a^2 - 16b^2 = .... $\end{align}

$\begin{align}13.)~x^2 - 19x - 20 = .... $\end{align}

Syaratnya:
- Jangan jawab ngasal.
- Harus menggunakan cara/rumus.
- Jika ngasal jawaban tersebut langsung dihapus/koreksi.
- Jika anda kebingungan komentar sudah kusediakan sini.
- Tidak berkomentar dikolom jawaban, kecuali komen akhir.


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