Question: 10. Given: A = x + 2, B = 3x + 1 and C = x + 9x + 14 a) Find A - 3C

10. Given: A = x + 2, B = 3x + 1 and C = x + 9x + 14 a) Find A" - 3C b) Find the product of A and B. ( x 72 - 3 ( x 4 9 x + 14 ) x+ 2 + 3 x+) x 7 14 x + 4 - 3 x9 - 27x - 42 4 x+3 - 2x - 23 x - 38 c) Subtract B from C. d) If D is a binomial such that AD = C, find D. * +9x + 14 - 3 x + 1 4 2 + 6*+15 11. Find the value of k such that (2x - 3) (x +4k) = 2x + 5x - 12. Substitute your value of k and find the product to show you are correct. ( 2x- 3 ) ( xthe ) k = 4 2 x 2 , 5X-12- 17 12. If (3x + 1) (x + n) = 3x + bx - 6, what are the values of n and b? 3 x - ButIn - 6 * = -f 3 x 2 - 1 # n - 6 1 - - 6 13. Factor the expression 2x + 5x + 3. Box your factored expression. Check by multiplying. 2x 2 + 5 x + 3 ( X+ 1) (2X+3)

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