Question

Solve for $x:x^2+6x-27=0$

Answer 1

Now,

$x^2+6x-27=0$

or, $x^2+9x-3x-27=0$

or, $x(x+9)-3(x+9)=0$

or, $(x+9)(x-3)=0$

or $x=-9,3$.