. 8x²+20x . ______________ first, try to solve the first one... x-3 ) 8x³ - 4x² -36x -72 so mult x AND -3 by 8x² . 8x³ -24x² (remember it is substract not add) ------------------------------------ . 20x²-36x-72 Now try to solve the first one again.. . 20x²-60x ------------------------------------ 24x-72 Now it is simplified
24x=72 x=3 answer is 3
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