that answer is 9
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2x - 5 - 4x + 8= 2x - 4x - 5 + 8= -2x + 3
(2x - 3)(4x + 9)(2x + 3) = (2x - 3)(2x + 3)(4x + 9) = [(2x)^2 - (3^2)](4x + 9) = (4x^2 - 9)(4x + 9) = (4x^2)(4x) + (4x^2)(9) - (9)(4x) - (9)(9) = 16x^3 + 36 x^2 - 36x - 81
4x - 3 = 2x + 54x - 2x = 5 + 32x = 8x = 8/2x = 4To check:4(4) - 3 = 132(4) + 5 = 13
2x+17 = 4x-3 2x-4x = -3-17 -2x = -20 Answer: x =10
5x + 3 - 4 + 4x = 9x -1