15 feet (4.6 m) wingspan and 5 feet
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12x2.
3x. 15x - 9x = 6x 9x - 6x = 3x 6x - 3x = 3x 3x - 3x = 0
12x2 - 7x + 1 = 12x2 - 4x - 3x + 1 = 4x(3x - 1) - 1(3x - 1) = (3x - 1)(4x - 1)
(3x2 - 6x)/3x = 3x(x-2)/3x = x-2, for x<>0
6x - 12 = 3x + 15 3x = 27 x = 9