Question

1ab + 2a + 3b + 6 = ?
1. (A+3) (b+3)
2. (A+2) (b+3)
3. (A+2) (b+6)
4. (A+3) (b+6)

Explanation needed
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Answer 1

$\textsf{\large Solution}$

$\texttt{\hspace{1em} \textemdash \:\: 1ab + 2a + 3b + 6}$

$\texttt{\hspace{1em} \textemdash \:\: a(b + 2) + 3(b + 2)}$

$\texttt{\hspace{1em} \textemdash \:\: (a + 3) (b + 2)}$

$\text{\hspace{.8em} Hence, none of these.}$