Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

0 == -9-12*x-4*x^2+3*x^2-11

ready: no

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Path 1

path	[0, 7, 7, 2, 1, 1, 1, 0]
steps	8
major rules	1
active labels	quadraticequationstrategy topform