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Mathematics
Problem
Explain briefly why
x
=
4
x=4
x
=
4
is a root of
f
(
x
)
=
0
f(x)=0
f
(
x
)
=
0
when
x
−
4
x-4
x
−
4
is a factor of the polynomial
f
(
x
)
f(x)
f
(
x
)
.
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