How do you factor the trinomial #x²+8x+15#?
2 Answers
Apr 13, 2018
Explanation:
First, find the factors of 15.
Now, split 8x into 2 terms of "x"s containing the numbers 1 and 15 or 3 and 5.
Now we have
Next factor x from
Also factor 5 from
We can notice that
Explanation:
Do it backwards to double check.
FOIL
First: x times x is
Outer: x times 3 is
Inner: x times 5 is
Last: 5 times 3 is
Add like terms:
Final answer: