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Problem
Problem
Solve using the null factor law: a.
a
4
x
=
0
4x = 0
4
x
=
0
b.
b
a
b
=
0
ab = 0
ab
=
0
c.
c
2
x
y
=
0
2xy = 0
2
x
y
=
0
d.
d
3
a
b
c
=
0
3abc = 0
3
ab
c
=
0
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