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Anonymous
3(x + 1)(x + 3)
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If this is algebra then; 3x plus 12x = 15x
12x + 131 = 189 + 3x 12x - 3x + 131 - 189 = 0 9x - 58 = 0 9x = 58 x = 6,44444
3x+12x = 15 15x = 15 x = 1
(3x + 5)(3x^2 + 4)
9x + 2 = 12x + 14 -3x = 12 x = -4