Exam 2: Polynomial and Rational Functions

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Given f(x)=x210x+21x+5f ( x ) = \frac { x ^ { 2 } - 10 x + 21 } { x + 5 } , determine the equations of any slant and vertical asymptote.

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Find the vertex of the parabola. y = x2 - 12x + 36

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Use the zero or root feature of a graphing utility to approximate the zeros of f(x)=2x3+8x25x7f ( x ) = 2 x ^ { 3 } + 8 x ^ { 2 } - 5 x - 7 accurate to the nearest thousandth.

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Select the graph of the function and determine the zeros of the polynomial. f(x)=x35x2f ( x ) = x ^ { 3 } - 5 x ^ { 2 }

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Determine the number of turning points of the graph of the function. f(x)=2x4+4x2+4f ( x ) = 2 x ^ { 4 } + 4 x ^ { 2 } + 4

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Select the graph of the function and determine the zeros of the polynomial. f(t)=16(t22t+20)f ( t ) = \frac { 1 } { 6 } \left( t ^ { 2 } - 2 t + 20 \right)

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Use long division to divide. (x3+4x2+x+4)÷(x+4)\left( x ^ { 3 } + 4 x ^ { 2 } + x + 4 \right) \div ( x + 4 )

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Simplify the rational expression, 4x3+x251x+364x3\frac { 4 x ^ { 3 } + x ^ { 2 } - 51 x + 36 } { 4 x - 3 } , by using long division or synthetic division.

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Find the vertex of the parabola. ​ Y = 3x2 - 1 ​

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Find the domain of x in the expression. x27x+12\sqrt { x ^ { 2 } - 7 x + 12 }

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A roofing contractor is fabricating gutters from 1010 -inch aluminum sheeting.The contractor plans to use an aluminum siding folding press to create the gutter by creasing equal lengths for the sidewalls (see figure).  A roofing contractor is fabricating gutters from  10  -inch aluminum sheeting.The contractor plans to use an aluminum siding folding press to create the gutter by creasing equal lengths for the sidewalls (see figure).     where  a = 10 - 2 x  Let x represent the height of the sidewall of the gutter.Write a function A that represents the Cross-sectional area of the gutter.   where a=102xa = 10 - 2 x Let x represent the height of the sidewall of the gutter.Write a function A that represents the Cross-sectional area of the gutter.

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The function given by f(x)=16x27f ( x ) = - 16 x ^ { 2 } - 7 has no x-intercepts.

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Find the domain of the function. g(s)=3ss9g ( s ) = \frac { - 3 s } { s - 9 }

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Find the inverse of the one-to-one function. y=7x+5y = 7 x + 5

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Using the factors (5x + 4) and (x - 1), find the remaining factor(s) of f(x)=20x4+109x330x279x+20f ( x ) = - 20 x ^ { 4 } + 109 x ^ { 3 } - 30 x ^ { 2 } - 79 x + 20 and write the polynomial in fully factored form.

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A rectangular package to be sent by a delivery service can have a maximum combined length and girth (perimeter of a cross section) of 168 inches. ​ A rectangular package to be sent by a delivery service can have a maximum combined length and girth (perimeter of a cross section) of 168 inches. ​   ​ Write a function that represents the volume of the package. ​ ​ Write a function that represents the volume of the package. ​

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Simplify the complex number and write it in standard form. (2i)4( 2 i ) ^ { 4 }

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Find domain of the following function. g(x)=x249x26x7g ( x ) = \frac { x ^ { 2 } - 49 } { x ^ { 2 } - 6 x - 7 }

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Do the operation and express the answer in a + bi form. 19i36\frac { - 19 } { i ^ { 36 } }

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Use a graphing utility to graph the equation.Use the graph to approximate the values of x that satisfy each inequality. Equation: y=6xx5y = \frac { 6 x } { x - 5 } Inequality: y8y \geq 8

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