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Equations & Systems
medium
0:00.0
Find the sum of the solutions to
x
2
−
10
x
+
21
=
0
x^2 - 10x + 21 = 0
x
2
−
10
x
+
21
=
0
.
A
7
7
7
B
3
3
3
C
10
10
10
D
−
10
-10
−
10
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