Polynomial Equations
PSAT Math · Flashcards
PSAT MATH · FLASHCARDS
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QUESTION
Evaluate
P
(
2
)
P(2)
P
(
2
)
for
P
(
x
)
=
x
3
−
4
x
P(x)=x^3-4x
P
(
x
)
=
x
3
−
4
x
: what is
P
(
2
)
P(2)
P
(
2
)
?
QUESTION
What is the sum of the roots of
x
2
−
7
x
+
10
=
0
x^2-7x+10=0
x
2
−
7
x
+
10
=
0
?
QUESTION
What does the discriminant value
b
2
−
4
a
c
>
0
b^2-4ac>0
b
2
−
4
a
c
>
0
imply about real solutions?
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ANSWER
Two distinct real solutions. Positive discriminant yields two different real roots.
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