Exam 5: Exponents and Polynomials

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Perform the indicated operations. -The bar graph shows the median annual income for residents of a selected region of the United States, by level of education. The given polynomial models describe the median annual income for men, M, and for women, W, who have Completed x years of education. M=-23+1170-13,808x+72,566 W=8-56+511x+14,763 Find a mathematical model for M - W and use it to calculate the difference in the median annual income between Men and women with 8 years of education. Does the model underestimate or overestimate the actual Difference?  Perform the indicated operations. -The bar graph shows the median annual income for residents of a selected region of the United States, by level of education. The given polynomial models describe the median annual income for men, M, and for women, W, who have Completed x years of education.  \begin{array} { l }  M = - 23 x ^ { 3 } + 1170 x ^ { 2 } - 13,808 x + 72,566 \\ W = 8 x ^ { 3 } - 56 x ^ { 2 } + 511 x + 14,763 \end{array}  Find a mathematical model for M - W and use it to calculate the difference in the median annual income between Men and women with 8 years of education. Does the model underestimate or overestimate the actual Difference?

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Use a vertical format to add the polynomials. - 9+2 6+7

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Use a vertical format to add the polynomials. - 3+6-5x 2+3-4x

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Find the product. - (x+9)(x+11)( x + 9 ) ( x + 11 )

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Find the product. - (14x9)(13x+8)\left( \frac { 1 } { 4 } x - 9 \right) \left( \frac { 1 } { 3 } x + 8 \right)

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Use the FOIL method to find the product. Express the product in descending powers of the variable. - (6x+2)(x+9)( 6 x + 2 ) ( x + 9 )

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Use a vertical format to subtract the polynomials. - 4-4+7 - --9+x-14

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Multiply by using the rule for the square of a binomial. - (x+6)2( x + 6 ) ^ { 2 }

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Use a vertical format to subtract the polynomials. - 12+6 - 16-2

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Add the polynomials. - (7y5+8y3)+(6y54y3)\left( 7 y ^ { 5 } + 8 y ^ { 3 } \right) + \left( 6 y ^ { 5 } - 4 y ^ { 3 } \right)

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Identify the polynomial as a monomial, binomial, or trinomial. Give the degree of the polynomial. - 13x2- 13 x ^ { 2 }

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Identify the polynomial as a monomial, binomial, or trinomial. Give the degree of the polynomial. - 13y3+9y2+313 y ^ { 3 } + 9 y ^ { 2 } + 3

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Identify the polynomial as a monomial, binomial, or trinomial. Give the degree of the polynomial. - 5x4+3x37x25 x ^ { 4 } + 3 x ^ { 3 } - 7 x ^ { 2 }

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Perform the indicated operations. - [(3x9+2)(12x7+9x3)][(7x97x5+9x)+(11x39x10)]\left[ \left( 3 x ^ { 9 } + 2 \right) - \left( - 12 x ^ { 7 } + 9 x ^ { 3 } \right) \right] - \left[ \left( 7 x ^ { 9 } - 7 x ^ { 5 } + 9 x \right) + \left( 11 x ^ { 3 } - 9 x - 10 \right) \right]

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Find the product. - (x5)(x2+5x9)( x - 5 ) \left( x ^ { 2 } + 5 x - 9 \right)

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Identify the polynomial as a monomial, binomial, or trinomial. Give the degree of the polynomial. - 16y+3- 16 y + 3

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Use the FOIL method to find the product. Express the product in descending powers of the variable. - (8x11)(4x5)( 8 x - 11 ) ( 4 x - 5 )

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Multiply by using the rule for the square of a binomial. -The square painting in the figure measures x inches on each side. The painting is uniformly surrounded by a frame which measures 1 inch on each side. Write a polynomial in descending powers of x which expresses the Area of the square that includes the painting and the frame. Then write an expression for the area of the frame. (Hint: The area of the frame is the area of the painting and the frame minus the area of the painting.) Multiply by using the rule for the square of a binomial. -The square painting in the figure measures x inches on each side. The painting is uniformly surrounded by a frame which measures 1 inch on each side. Write a polynomial in descending powers of x which expresses the Area of the square that includes the painting and the frame. Then write an expression for the area of the frame. (Hint: The area of the frame is the area of the painting and the frame minus the area of the painting.)

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Use a vertical format to add the polynomials. - 5+2-8+6 9+2+6-9

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Multiply the monomials. - (4x5)(9x4)\left( 4 x ^ { 5 } \right) \left( - 9 x ^ { 4 } \right)

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