Question

resolve in to factor 18 (a - b) ^2 + 27 (a - b)

Answer 1

[Let (a-b) = x]
Therefore ,
${18x}^{2} + 27x$
$= 9x(2x + 3)$
On substitution i.e. x = a-b ;
we get
$9(a - b)(2a - 2b+ 3)$ i.e Ans.