x3 + 4x2 + 6x + 24 = (x2 + 6)(x + 4)
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8x3 + 4x2 + 6x + 3 = 4x2(2x + 1) + 3(2x + 1) = (2x + 1)(4x2 + 3)
5x+3+x=24 6x+3=24 6x=21 x=3.5
It can't be factored because the discriminant is less than zero.
From what i understand the equation is like this; (3 * 2 ) + 6x + 24 = 0 6 + 6x +24 = 0 6x = - 24 - 6 6x = - 30 x = - 5
6x + 5 = 0 (I'm assuming) 6x = -5x = -5/6