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Mathematics
Deegan Obrien
5 August, 04:53
What are the roots of the equation x^2-5x-2=0?
+2
Answers (
2
)
Joe Hines
5 August, 05:49
0
Answer: it is not possible
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Cara Hamilton
5 August, 07:32
0
Problem:
The quadratic formula states:
For
a
x
2
+
b
x
+
c
=
0
, the values of
x
which are the solutions to the equation are given by:
x
=
-
b
±
√
b
2
-
(
4
a
c
)
2
⋅
a
Substituting:
1
for
a
-
5
for
b
-
2
for
c
gives:
x
=
-
(
-
5
)
±
√
(
-
5
)
2
-
(
4
⋅
1
⋅
-
2
)
2
⋅
1
x
=
5
±
√
25
-
(
-
8
)
2
x
=
5
±
√
25
+
8
2
x
=
5
±
√
33
2
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