B. a? D. Either true or false 39. aa- A7a C. as 40. Similar terms are ferms with different literal coefficients. True B. False C. Neither true nor false 41. Multiply: 3x(2x2 + 5x -3) A. 6x2 + 15x - 9 B.5x3 + 8x2 - 9x C.5x2 + 8x - 6 42. Find the sum of -7a2 + 10a². A 2a В. За2 43. Multiply: (-4a²b) (-2ab2). A. 9x?yo B. Sab C.Sab3 D) 6x3 + 15x2 - 9x Csa D. 2a D. -8ab3 44. 12. - A. ху &x=y2 c.xyz D. x11y2 B. 2x2 C. - 2x2 D. 2xy 45. Find the quotient: -14x*y2 7x²72 A. -2x'y? 46. Divide: 36xtra 4x2y A 9x2y3 B. 9x²y C. 9xy D. 9xy 47. Subtract 10 a + 4 from 20a - 12 A 10a + 16 B. 10a-8 C. 10a +8 D. 10a - 16 48. Using the FOIL Method, name the last terms of the expression, (4x-5) (3x+6). A. -5 and 6 B. 4x and 3x C. 3x and -5 D. 4x and 6 49. Simplify: (x + 2)(x - 2) A. x - 4 B. x2 - 4 C. - 4 D.x2 + 4 50. Divide 2a2 + 1 1a + 15 by a + 3 A. 2a-5 B. 2a + 1 C. 2a + 5 D. 2a​