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Q: What is 18d plus 2d-1 plus 2d?

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2d+1d= 3d

2d + 11e +8d + 11e = 10d + 22e

2d + 7 = 9 2d = 2 d = 1

2(5c + 2d)(5c + 2d)

15 ac + 20 bc + 6 ad + 8 bd =3a (5c + 2d) + 4b (5c + 2d) =(3a + 4b) (5c + 2d)

9m-2d

2d+1=29 2d=29-1=28 d=28/2=14

2d + 25 = 55Therefore 55 - 25 = 2dTherefore, 2d = 30d = 30/2Therefore, d = 15

3d+8=2d-7 3d+8-8=2d-7-8 (substract 8 on both side) 3d=2d-15 3d-2d=2d-2d-15 (substract 2d on both side) d=-15

49 - 14d

ac + 2ad + 2bc + 4bd = a(c + 2d) + 2b(c + 2d) = (a + 2b)(c + 2d) Now expand to confirm your answer: c(a + 2b) + 2d(a + 2b) = ac + 2bc + 2ad + 4bd ≡ ac + 2ad + 2bc + 4bd

(a + 2b)(c + 2d)