Two Washington businessmen yesteray urged fellow entrepreneurs to educate themselves more completely about the metropolitan area's political forces and economic development.

Lawyer R. Robert Linowes, president of the Metropolitan Washington Board of Trade, said bluntly that business leaders must become involved "in the critical political decisions which will affect this city and the area around it."

Speaking to a Washinton Rotary Club meeting downtown, Linowes defended a recent Board of Trade decision to establish political action committees in the District, Maryland and Virginia.

"It is not our intention to try eo elect candidates who are favourable to the business community. even if that were out desire, the business community in this area is too varied to be represented by one point of view," he declared.

But Linowes said he wants the Committees to provide voters with "the best information they can be given and to try encourage the best candidates they can be offered."

Over in Georgetown meanwhile, shoe retailer Frank H. Rich told a Kiwanis Club luncheon that this business colleagues should "become experts' on local issues and testify in public, to "be part of the rebirth of the nation's capital."

Rich said "the maiden voyage" of the D.C. government under home rule "has been through some stormy seas, trying to develop staff, responding to its constituents, without prior guidelines for experience."

He called for improved management know-how at the District Builing, "a greater awareness of what it is going to take to put this city on a sounder economic footing."

Rich emphasized the need to improve the city's public school system. He called on the City Council to move forward with hearings on the recent report of the D.C. Tax Revision Commission.

The 20-member commission offered 68 recommendations to boost the city's tax base only one received much attention - all of it negative. That was a proposal to tax nonprofit groups by 10 percent of what their normal tax would be. "Absolutely no initiative has been taken on any of the other 67 proposals, some of which would have produced significant revenues to the city whereas the above-mentioned tax is of minor revenue significance," he said.