Question

Factor -6m + 9.
a.-6(m - 3)
b.-6(m + 9)
c.-3(2m + 3)
d.-3(2m - 3)
please exsplain

Answer 1

You can pull out a -3 out of both -6 and 9

d. -3(2m - 3)

You can check this by distributing the -3 and seeing if it matches up with -6m + 9