Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

x == sqrt (2/5) or x == -sqrt (2/5)

ready: yes

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Path 1

path	[0, 7, 0, 0, 4, 3, 0, 0, 4]
steps	9
major rules	3
active labels	quadraticequationstrategy generalform