It seems that $ x^{2}+12x-27 $ cannot be factored out.
Step 1: Identify constants $ \color{blue}{ b }$ and $\color{red}{ c }$. ( $ \color{blue}{ b }$ is a number in front of the $ x $ term and $ \color{red}{ c } $ is a constant). In our case:
$$ \color{blue}{ b = 12 } ~ \text{ and } ~ \color{red}{ c = -27 }$$Now we must discover two numbers that sum up to $ \color{blue}{ 12 } $ and multiply to $ \color{red}{ -27 } $.
Step 2: Find out pairs of numbers with a product of $\color{red}{ c = -27 }$.
PRODUCT = -27 | |
-1 27 | 1 -27 |
-3 9 | 3 -9 |
Step 3: Because none of these pairs will give us a sum of $ \color{blue}{ 12 }$, we conclude the polynomial cannot be factored.