Exam 2: Polynomial and Rational Functions

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Find all the zeros of the function and write the polynomial as a product of linear factors. x4+32x2+256x ^ { 4 } + 32 x ^ { 2 } + 256

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Select the correct graph of the function given by f(x)=x4f ( x ) = x ^ { 4 } . Explain how the graph of function g differs (if it does) from the graph of each function ff . g(x)=f(x)+8g ( x ) = f ( x ) + 8

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Find all the rational zeros of the function f(x)=2x5+3x49x33x211x6f ( x ) = 2 x ^ { 5 } + 3 x ^ { 4 } - 9 x ^ { 3 } - 3 x ^ { 2 } - 11 x - 6

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Use long division to divide. (x34x2+36x144)÷(x4)\left( x ^ { 3 } - 4 x ^ { 2 } + 36 x - 144 \right) \div ( x - 4 )

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Determine the domain of f(x)=x2+9x+20x3+5x2x5f ( x ) = \frac { x ^ { 2 } + 9 x + 20 } { x ^ { 3 } + 5 x ^ { 2 } - x - 5 }

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Solve the inequality and graph the solution on the real number line. x26x16>0x ^ { 2 } - 6 x - 16 > 0

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Find domain of the following function. g(x)=x29x24x+3g ( x ) = \frac { x ^ { 2 } - 9 } { x ^ { 2 } - 4 x + 3 }

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Simplify the complex number and write it in standard form. (i)6( - i ) ^ { 6 }

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The cost C (in millions of dollars) removing p% the industrial and municipal pollu- tants discharged into a river is given by C=210p100p,0p100C = \frac { 210 p } { 100 - p } , 0 \leq p \leq 100 Select the correct graph of the cost function.

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Find all the rational zeros of the function. x318x2+108x216x ^ { 3 } - 18 x ^ { 2 } + 108 x - 216

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Determine the domain of f(x)=x2+8x+15x3+5x2x5f ( x ) = \frac { x ^ { 2 } + 8 x + 15 } { x ^ { 3 } + 5 x ^ { 2 } - x - 5 }

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Describe the right-hand and the left-hand behavior of the graph of n(x)=13(x310x2+6x+1)n ( x ) = - \frac { 1 } { 3 } \left( x ^ { 3 } - 10 x ^ { 2 } + 6 x + 1 \right)

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Find domain of the following function. g(x)=x216x25x+4g ( x ) = \frac { x ^ { 2 } - 16 } { x ^ { 2 } - 5 x + 4 }

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Write the complex conjugate of the complex number. Then multiply the number by its complex conjugate. 13+12i- 13 + \sqrt { 12 } i

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Use the position equation s=15t2+v0t+s0s = - 15 t ^ { 2 } + v _ { 0 } t + s _ { 0 } , where SS represents the height of an object (in feet), v0v _ { 0 } represents the initial velocity of the object (in feet per second), s0s _ { 0 } represents the Initial height of the object (in feet), and tt represents the time (in seconds). A projectile is fired straight upward from ground level (s0=0)\left( s _ { 0 } = 0 \right) with an initial velocity of 165165 feet Per second. At what instant will it be back at ground level?

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Find the domain of xx in the expression. Use a graphing utility to verify your result. 25x2\sqrt { 25 - x ^ { 2 } }

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Write the standard form of the equation of the parabola that has a vertex at (8,3)( - 8 , - 3 ) and passes through the point (6,2)( - 6,2 )

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Write f(x)=x34x2+4x16f ( x ) = x ^ { 3 } - 4 x ^ { 2 } + 4 x - 16 as a product of linear factors.

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Use Descartes's Rule of Signs to determine the possible numbers of positive and neg- ative zeros of the function. 6x512x6 x ^ { 5 } - 12 x

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Determine the equations of the vertical and horizontal asymptotes of the graph of the function f(x)=2x2x29f ( x ) = \frac { 2 x ^ { 2 } } { x ^ { 2 } - 9 }

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