Exam 2: Polynomial and Rational Functions

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Find the interval(s) for b such that the following equation has at least one real solution and write a conjecture about the interval(s) based on the values of the coefficients 4x2+bx+13=04 x ^ { 2 } + b x + 13 = 0 .

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Describe the right-hand and the left-hand behavior of the graph of q(x)=712(x3x2+2x+1)q ( x ) = - \frac { 7 } { 12 } \left( x ^ { 3 } - x ^ { 2 } + 2 x + 1 \right) .

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Determine the x-intercept(s) of the quadratic function f(x)=x2+2x+2f ( x ) = x ^ { 2 } + 2 x + 2 .

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Select the graph of the function y=6x2y = - 6 x ^ { 2 } .Compare the graph of this function with the graph of y=x2y = x ^ { 2 } .

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Write the complex number in standard form. 0.0001\sqrt { - 0.0001 }

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Find the domain of x in the expression 16x2\sqrt { 16 - x ^ { 2 } } .

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Use synthetic division to express P(x)=2x3+3x228x+63P ( x ) = 2 x ^ { 3 } + 3 x ^ { 2 } - 28 x + 63 in the form (divisor)(quotient) + remainder for the divisor x + 5.

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Use Descartes's Rule of Signs to determine the possible numbers of positive and negative zeros of the function. ​ 4x5 - 8x ​

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Given -3i is a root, determine all other roots of f(x) = x3 + 2x2 + 9x + 18.

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Determine the zeros (if any) of the rational function f(x)=x24x4f ( x ) = \frac { x ^ { 2 } - 4 } { x - 4 } .

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Find two positive real numbers whose product is a maximum. ​ The sum of the first and twice the second is 56. (Round your answer to two decimal places.) ​

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Use synthetic division to divide. x3+64x+4\frac { x ^ { 3 } + 64 } { x + 4 }

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Graph the quadratic function. ​ F (x) = - x2 - 4x + 1 ​

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Perform the operation and write the result in standard form. 19i(16i)19 i ( 1 - 6 i )

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Simplify f(x) and find any vertical asymptotes. f(x)=x216x+4f ( x ) = \frac { x ^ { 2 } - 16 } { x + 4 }

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Find the interval(s) for b such that the following equation has at least one real solution x2+bx+6=0x ^ { 2 } + b x + 6 = 0 .

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An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box. An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box.    An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box.

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Describe the right-hand and the left-hand behavior of the graph of s(x)=3x5+12x3+3s ( x ) = 3 x ^ { 5 } + 12 x ^ { 3 } + 3 .

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Find the values of b such that the function f(x)=x2+bx25f ( x ) = x ^ { 2 } + b x - 25 has the given minimum value -74.

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Use synthetic division to divide. (3x319x2+30x8)÷(x4)\left( 3 x ^ { 3 } - 19 x ^ { 2 } + 30 x - 8 \right) \div ( x - 4 )

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