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Question

Factorise the expression.
(lm+l)+m+1

A
(l+1)(m+1)
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B
(2l+1)(m+1)
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C
(l1)(m+1)
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D
(l+1)(m2+1)
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Solution

The correct option is A (l+1)(m+1)
(lm+l)+m+1
=l(m+1)+1(m+1)
=(m+1)(l+1)

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