It seems that $ 9x^{2}-19x+24 $ cannot be factored out.
Step 1: Identify constants $ a $ , $ b $ and $ c $.
$ a $ is a number in front of the $ x^2 $ term $ b $ is a number in front of the $ x $ term and $ c $ is a constant. In this case:
Step 2: Multiply the leading coefficient $\color{blue}{ a = 9 }$ by the constant term $\color{blue}{c = 24} $.
$$ a \cdot c = 216 $$Step 3: Find out two numbers that multiply to $ a \cdot c = 216 $ and add to $ b = -19 $.
Step 4: All pairs of numbers with a product of $ 216 $ are:
PRODUCT = 216 | |
1 216 | -1 -216 |
2 108 | -2 -108 |
3 72 | -3 -72 |
4 54 | -4 -54 |
6 36 | -6 -36 |
8 27 | -8 -27 |
9 24 | -9 -24 |
12 18 | -12 -18 |
Step 5: Find out which factor pair sums up to $\color{blue}{ b = -19 }$
Step 6: Because none of these pairs will give us a sum of $ \color{blue}{ -19 }$, we conclude the polynomial cannot be factored.