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Byju's Answer
Standard VIII
Mathematics
Factorisation by Regrouping Terms
Decide, using...
Question
Decide, using factor theorem, whether (x - 2) is a factor of
x
3
−
4
x
2
−
4
.
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Solution
According to factor theorm
x
−
2
is factor of
x
3
−
4
x
2
−
4
only if
x
=
2
is zero of polynomial
so at
x
=
2
x
3
−
4
x
2
−
4
=
2
3
−
42
2
−
4
=
8
−
16
−
4
=
−
12
≠
0
So
x
−
2
is not factor of the polynomial
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