In order to factor , first we need to ask ourselves: What two numbers multiply to -45 and add to 4? Lets find out by listing all of the possible factors of -45
Factors:
1,3,5,9,15,45,
-1,-3,-5,-9,-15,-45,List the negative factors as well. This will allow us to find all possible combinations
These factors pair up to multiply to -45.
(-1)*(45)=-45
(-3)*(15)=-45
(-5)*(9)=-45
Now which of these pairs add to 4? Lets make a table of all of the pairs of factors we multiplied and see which two numbers add to 4
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