Page 746 - Basic College Mathematics with Early Integers

722 A PPEND I X B I EXPONENTS AND POLYNOMIALS

2 2 2
34. 15x + 92 35. 12x - 12 36. 14a - 32

2 3 2 2 3 2 2
37. 12x - 3214x + 2x - 32 38. 13y + 2215y - y + 22 39. 1x + x + x21x + x + 12

4 2 4 2 2 2 2 2
40. 1a + a + 121a + a - 12 41. 12z - z + 1215z + z - 22 42. 12b - 4b + 321b - b + 22

Concept Extensions

Find the area of each figure.

43. 44.
(2x 11)
Square centimeters
(y 6) feet

2
(y 3y 2) feet

Find the area of the shaded figure.To do so, subtract the area of the smaller square from the area of the larger geometric
figure.

45. 46. (3x 5) miles
Square

2
(x 1) x meters 2x miles (3x 5)
meters miles

2 2
47. Suppose that a classmate asked you why 12x + 12 is not 4x + 1. Write down your response to this classmate.

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