Factor polynomial $$ 3x^{3}+33x^{2}+57x $$

$$ 3x^{3}+33x^{2}+57x = 3x( x^{2}+11x+19 ) $$

Step 1 :

After factoring out $ 3x $ we have:

$$ 3x^{3}+33x^{2}+57x = 3x ( x^{2}+11x+19 ) $$

Step 2 :

Step 2: 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:

$$ \color{blue}{ b = 11 } ~ \text{ and } ~ \color{red}{ c = 19 }$$

Now we must discover two numbers that sum up to $ \color{blue}{ 11 } $ and multiply to $ \color{red}{ 19 } $.

Step 3: Find out pairs of numbers with a product of $\color{red}{ c = 19 }$.

PRODUCT = 19
1     19	-1     -19

Step 4: Because none of these pairs will give us a sum of $ \color{blue}{ 11 }$, we conclude the polynomial cannot be factored.

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