Question

Factor: -12n - 20,
a. -4(3n-5)
b. 4 (3n-5)
c. -4 (3n+5)
d. 4 (3n+5)
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Answer 1

c. -4(3n+5)

you take out the GCF which would be -4 in order to simplify the equation. It has to be a -4 and not 4 because you have to get the values in the parentheses to be positive and the only way to make it positive is to take out a negative.