3 m (2 m^2-5 m n+4 n^2 ) is equal to - Vidyadip

MCQ

$3\ m \times\left(2\ m^2-5\ m n+4\ n^2\right)$ is equal to

A
$6\ m^3+15\ m^2 n-12\ m n^2$
✓
$6\ m^3-15\ m^2 n+12\ m n^2$
C
$6\ m^3-15\ m^2 n-12\ m n^2$
D
$6\ m^3+15\ m^2 n+12\ m n^2$

✓

Answer

Correct option: B.

$6\ m^3-15\ m^2 n+12\ m n^2$

$3\ m \times\left(2\ m^2-5\ m n+4\ n^2\right)$
$=6\ m^3-15\ m^2 n+12\ m n^2$

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