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Tardigrade
Question
Mathematics
Product of real roots of the equation t2 x2+|x|+9=0 . t ∈ R is always
Q. Product of real roots of the equation
t
2
x
2
+
∣
x
∣
+
9
=
0.
t
∈
R
is always
398
129
Complex Numbers and Quadratic Equations
Report Error
A
positive
B
negative
C
zero
D
does not exist
Solution:
Note that
t
2
x
2
+
∣
x
∣
+
9
≥
0
+
9
>
9∀
x
∈
R
, Thus,
t
2
x
2
+
∣
x
∣
+
9
=
0
does not have real roots.