Polynomial Equations
PSAT · Flashcards · Recall
PSAT · FLASHCARDS
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QUESTION
What is the zero-product property used to solve
(
x
−
3
)
(
x
+
5
)
=
0
(x-3)(x+5)=0
(
x
−
3
)
(
x
+
5
)
=
0
?
QUESTION
What is the discriminant of
a
x
2
+
b
x
+
c
=
0
ax^2+bx+c=0
a
x
2
+
b
x
+
c
=
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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