Question

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

(a) (l + 1)(m + 1)

(6) (l – 1)(m – 1)

(c) (l + 1)(m – 1)

(d) (l – 1)(m + 1).​

Answer 1

(lm+1) +m +1

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

( l+1 ) ( m+1 )

Answer A is correct

Answer 2

Answer:

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