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College Algebra - Pretest Prep
Solve by factoring : 2x^2-9x-5=0
Simplify: 2x^{-2}\left(4x\right)^2
College Algebra - Pretest Prep
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Answers
1
Simplify: 2x^{-2}\left(4x\right)^2
64
32
32x2
16x
2
Solve by factoring : 2x^2-9x-5=0
x = 1 and -5
x = 2 and -5
x = -1/2 and 5
x = 1/2 and -5
3
Solve \frac{1}{2}x-5=\frac{2}{3}x+2
x = - 40
x = -42
x = 28
x = -18
4
Given f(x) = 2x and g(x) = x - 2 find ( f o g) (x)
x- 4
2x
2x - 2
2x - 4
5
What is the domain of \sqrt{x+2}
[0,∞)
(-2,∞)
[-2,∞)
(-∞,∞)
6
Simplify -7i( 3 + 2i)
35 i
14 - 21i
21i
-14 + 21i
7
Write in radical form: \left(3x\right)^{\frac{1}{2}}
\sqrt[3]{x}
\sqrt{9x}
\sqrt{3x}
3\sqrt{x}
8
Simplify: 3\sqrt{9x^2y^3}
9xy\sqrt{y}
27x\sqrt{y}
9xy
27y\sqrt{x}
9
Simplify: \frac{2x+10}{x^2-25}
\frac{2}{x}
\frac{5}{x}
\frac{x+5}{2}
\frac{2}{x-5}
10
Solve |2x+1|=7
x= -4
x = 3
x = 1 and 0
x = 3 and -4
11
Solve : 2\sqrt{3x}-1=5
x = 9
x = -3
x = 3
x = 6
12
Solve: 5 - 2x > 9
x < 7
x < -2
x > 7
x > -2
