Need some in geometry will give brainliest

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Ineed to know the answer to this algebra question.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7