a = x²+1
b = -2x²+x+2
-a.b
-(x²+1)(-2x²+x+2)
(-x²-1)(-2x²+x+2)
+2x⁴-x³-2x²+2x²-x-2
2x⁴-x³-x-2
14/09/22
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2x⁴-x³-x-2
a = x²+1
b = -2x²+x+2
-a.b
-(x²+1)(-2x²+x+2)
(-x²-1)(-2x²+x+2)
+2x⁴-x³-2x²+2x²-x-2
2x⁴-x³-x-2
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14/09/22