Find the product: (3m − 4n) × (2m − 3n)

Question:

Find the product:
(3m − 4n) × (2m − 3n)

Solution:

By horizontal method:

$(3 m-4 n) \times(2 m-3 n)$

$=3 m(2 m-3 n)-4 n(2 m-3 n)$

$=6 m^{2}-9 m n-8 m n+12 n^{2}$

$=6 m^{2}-17 m n+12 n^{2}$

 

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