If you notice, 8x + 4 = 4(2x + 1), but there is an odd coefficient for x2, so there is guaranteed to be some remainder (that is 8x + 4 is not a factor of the polynomial):
(24x3 - 5x2 - 48x - 8) ÷ (8x + 4) = 3x2 - 2x - 5 - (x2 - 12)/(8x + 4)
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7y+ 8x + 4= 20 + 8x- 8x - 8x7y + 4 = 20- 4 - 47y=16/7 /7y= 2.28the /7 means divide by 7 :)
When simplified it is: 1-8x
8x+4 = 2x+28 8x-2x = 28-4 6x = 24 x = 4
It is 8x + 16
4x2 + 8x + 4 = 4 (x2 + 2x + 1) = 4 (x + 1)2