'root out the cause' is a valid phrase and can be used in written English.
It is usually used to mean to find and eliminate the source or cause of an issue. For example: "We must root out the cause of the problem before it gets any worse."
We do nothing to root out the cause, burn the sickness at its very core.
According to FDA's letter, CSL's manufacturing methods hindered the ability to root out the cause of the adverse reactions.
At its core was a desire to root out the cause of sexual orientation and then through various means, including hypnosis and electric shock treatment, steer the patient toward heterosexuality.
We have to root out the causes of the violence.
A team of 20 investigators from the National Transportation and Safety Board has been dispatched to root out the causes of the plane failure.
The first is that the politically driven insistence on making community sentences highly punitive may also make them less effective at getting offenders to confront and root out the causes of their offending.
What protecting Goldman from risk meant, in practice, was placing bets that the investments it was selling to clients would fall in value, according to the chairman of the Senate's investigations subcommittee, which is holding hearings to root out the causes of the credit crisis.
Specifically, Sorvino called for efforts to train law enforcement officers to treat underage sex workers as victims and not criminals, to root out the causes of human trafficking in local communities, and to create victims' compensation funds through asset forfeiture.
The private testimony, released recently by the government panel responsible for rooting out the causes of the crisis, depicts an emboldened former chief executive, defiant in the face of criticism that his company fed the mortgage bubble.
Despite calls from even some of the administration's supporters to recognize the impossibility of transforming Iraq into a model democracy in the Middle East, Mr. Bush reasserted his intention to make Iraq the cornerstone of an effort to root out the underlying causes of terrorism and religious conflict.
An international campaign to root out the so-called Islamic State has caused the terror organization to cede 99percentt of its territory in Syria and Iraq.
