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Mathematics
Mathematics
Problem
Find the roots of the equation
x
2
−
9
x
+
20
=
0
x^2 - 9x + 20 = 0
x
2
−
9
x
+
20
=
0
. a)
−
4
and
5
-4 \text{ and } 5
−
4
and
5
b)
−
4
and
−
5
-4 \text{ and } -5
−
4
and
−
5
c)
4
and
5
4 \text{ and } 5
4
and
5
d)
8
and
10
8 \text{ and } 10
8
and
10
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