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Math Problems
Geometry
Find the focus or directrix of a parabola
Use the distributive property to multiply.
\newline
(
2
x
+
5
)
(
x
2
+
2
x
−
4
)
(2 x+5)\left(x^{2}+2 x-4\right)
(
2
x
+
5
)
(
x
2
+
2
x
−
4
)
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What is the focus of the parabola
y
=
−
x
2
y= -x^2
y
=
−
x
2
?
\newline
Simplify any fractions.
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Which of the following is a whole number?
\newline
Choices:
\newline
(A)
0
0
0
\newline
(B)
5
\sqrt{5}
5
\newline
(C)
π
\pi
π
\newline
(D)
−
9
-9
−
9
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Which of the following is a natural number?
\newline
Choices:
\newline
(A)
π
\pi
π
\newline
(B)
−
2
-2
−
2
\newline
(C)
5
5
5
\newline
(D)
7
\sqrt{7}
7
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