Equivalent Polynomial and Rational Expressions
AP Precalculus · Flashcards · Application
AP PRECALCULUS · FLASHCARDS
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QUESTION
What is the sum of the roots of
x
2
−
4
x
+
4
x^2 - 4x + 4
x
2
−
4
x
+
4
?
QUESTION
What is the expression for
(
x
−
3
)
2
(x - 3)^2
(
x
−
3
)
2
?
QUESTION
What is the quotient of
x
2
−
4
x
−
2
\frac{x^2 - 4}{x - 2}
x
−
2
x
2
−
4
?
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ANSWER
x
+
2
x + 2
x
+
2
. Factor numerator:
(
x
+
2
)
(
x
−
2
)
x
−
2
=
x
+
2
\frac{(x+2)(x-2)}{x-2} = x+2
x
−
2
(
x
+
2
)
(
x
−
2
)
=
x
+
2
.
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