Is x2-3 is factor of 2x4 3x3-2x2-9x-12 by long division
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Divide the polynomial 2x4+3x3-2x2-9x-12 by x2- 3
The quotient is 2x2+3x+4 and the remainder is 0
Now, solve 2x2+3x+4 = 0
The roots are root 3, - root 3 , (-3 + i root 23) / 4 and (-3 - i root 23)/ 4
The quotient is 2x2+3x+4 and the remainder is 0
Now, solve 2x2+3x+4 = 0
The roots are root 3, - root 3 , (-3 + i root 23) / 4 and (-3 - i root 23)/ 4
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