Pembahasan Soal 2

Jawaban: D

\begin{equation*}
\begin{split}
(2x - 5z)(4x^2 + 10xz + 25z^2)& = (2x - 5z)((2x)^2 + 2x\cdot 5z + (5z)^2)\\\\
(2x - 5z)(4x^2 + 10xz + 25z^2)& = (2x)^3 - (5z)^3\\\\
(2x - 5z)(4x^2 + 10xz + 25z^2)& = 8x^3 - 125z^3
\end{split}
\end{equation*}