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Best Answer

10x2 +4x + 21 = 0

=> 4*x +10*x^2 +21 = 0


Complex roots:
Root 1: -0.2-1.435 * i
Root 2: -0.2+1.435 * i

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15y ago
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Q: X4 plus 10x2 plus 21 equals 0?
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