The factorisation of (lm + l) + m + 1 is: - Vidyadip

MCQ

The factorisation of $(lm + l) + m + 1$ is:

✓
$(l + 1) (m + 1)$
B
$(l - 1) (m - 1)$
C
$(l + 1) (m - 1)$
D
$(l - 1) (m + 1)$

✓

Answer

Correct option: A.

$(l + 1) (m + 1)$

$= l(m + 1) + 1 (m + 1)$
$= (l + 1 ) (m + 1)$

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