It seems that $ 4x^{2}+34x-195 $ 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 $\color{blue}{ a = 4 }$ by the constant term $\color{blue}{c = -195} $.
$$ a \cdot c = -780 $$Step 3: Find out two numbers that multiply to $ a \cdot c = -780 $ and add to $ b = 34 $.
Step 4: All pairs of numbers with a product of $ -780 $ are:
PRODUCT = -780 | |
-1 780 | 1 -780 |
-2 390 | 2 -390 |
-3 260 | 3 -260 |
-4 195 | 4 -195 |
-5 156 | 5 -156 |
-6 130 | 6 -130 |
-10 78 | 10 -78 |
-12 65 | 12 -65 |
-13 60 | 13 -60 |
-15 52 | 15 -52 |
-20 39 | 20 -39 |
-26 30 | 26 -30 |
Step 5: Find out which factor pair sums up to $\color{blue}{ b = 34 }$
Step 6: Because none of these pairs will give us a sum of $ \color{blue}{ 34 }$, we conclude the polynomial cannot be factored.