Answer:
(c) x² - 2
Step-by-step explanation:
Step-by-step explanation:To find the quadratic polynomial with roots
2
2 and
0
0, we use the factored form of a quadratic polynomial:
�
(
)
=
−
1
P(x)=a(x−r
)(x−r
where
r
and
are the roots of the polynomial.
Given that the roots are
0, we can write the polynomial as:
P(x)=a(x−2)(x−0)
Now, expand and simplify:
P(x)=a(x−2)x
P(x)=ax
−2ax
Now, compare this with the given options:
(a)
x
−2x - This matches with our expression, so
a=1.
(b)
+
−2x+1 - This does not match.
(c)
−2 - This does not match.
(d)
4
−4 - This does not match.
Therefore, the correct quadratic polynomial is
−2x, and the correct option is (a).
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Answers & Comments
Answer:
(c) x² - 2
Step-by-step explanation:
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Answer:
Step-by-step explanation:To find the quadratic polynomial with roots
2
2 and
0
0, we use the factored form of a quadratic polynomial:
�
(
�
)
=
�
(
�
−
�
1
)
(
�
−
�
2
)
P(x)=a(x−r
1
)(x−r
2
)
where
�
1
r
1
and
�
2
r
2
are the roots of the polynomial.
Given that the roots are
2
2 and
0
0, we can write the polynomial as:
�
(
�
)
=
�
(
�
−
2
)
(
�
−
0
)
P(x)=a(x−2)(x−0)
Now, expand and simplify:
�
(
�
)
=
�
(
�
−
2
)
�
P(x)=a(x−2)x
�
(
�
)
=
�
�
2
−
2
�
�
P(x)=ax
2
−2ax
Now, compare this with the given options:
(a)
�
2
−
2
�
x
2
−2x - This matches with our expression, so
�
=
1
a=1.
(b)
�
2
−
2
�
+
1
x
2
−2x+1 - This does not match.
(c)
�
2
−
2
x
2
−2 - This does not match.
(d)
�
2
−
4
x
2
−4 - This does not match.
Therefore, the correct quadratic polynomial is
�
2
−
2
�
x
2
−2x, and the correct option is (a).