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Byju's Answer
Standard IX
Mathematics
Zero Polynomial
Which of the ...
Question
Which of the following is a zero of the
polynomial
x
2
−
4
?
A
0.0
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B
1
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C
2
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D
4
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Solution
The correct option is
C
2
The zero of a polynomial is the value at which the vaue of the polynomial turns out to be zero.
At
x
=
0
,
x
2
−
4
=
0
2
−
4
=
−
4
At
x
=
1
,
x
2
−
4
=
1
2
−
4
=
−
3
At
x
=
2
,
x
2
−
4
=
2
2
−
4
=
0
At
x
=
4
,
x
2
−
4
=
4
2
−
4
=
12
Hence,
x
=
2
is a zero of the given polynomial.
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Similar questions
Q.
A quadratic polynomial, the sum of whose zeroes is 0 and one zero is 3, is
(a) x
2
− 9
(b) x
2
+ 9
(c) x
2
+ 3
(d) x
2
− 3