Show that (x + 1)(x + 2)(x + 3) can be written in the form ax3 + bx2 + cx + d where a, b, c and d are positive integers.
(x2+3x+2)(x+3) = x3+3x2+3x2+9x+2x+6 = x3+6x2+9x+2x
RC
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