Ans: (a) $(2x-y)(3x+2y)$ (b) $(2x-y)(4-3x-2y)$
-
$\begin{array}{cl}
& 6x^2+xy-2y^2 \\
= & (3x+2y)(2x-y)
\end{array}$ -
$\begin{array}{cl}
& 8x-4y – 6x^2 – xy +2y^2 \\
= & 4(2x-y) – (3x+2y)(2x-y) \\
= & (2x-y)(4-3x-2y)
\end{array}$
