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National
Hard
Algebra
7–9
What is the discriminant of
3
x
2
+
2
x
−
5
=
0
3x^{2} + 2x - 5 = 0
3
x
2
+
2
x
−
5
=
0
?
Qual é o discriminante de
3
x
2
+
2
x
−
5
=
0
3x^{2} + 2x - 5 = 0
3
x
2
+
2
x
−
5
=
0
?
Answer options
A.
4
4
4
B.
56
56
56
C.
64
64
64
D.
−
56
-56
−
56
Check Answer
Solution
Step 1 of 2
1.
b
2
=
2
2
=
4
b^{2} = 2^{2} = 4
b
2
=
2
2
=
4
.
Next step
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