A new and complete dictionary of arts and sciences : comprehending all the branches of useful knowledge, with accurate descriptions as well of the various machines, instruments, tools, figures, and schemes necessary for illustrating them, as of the classes, kinds, preparations, and uses of natural productions, whether animals, vegetables, minerals, fossils, or fluids : together with the kingdoms, provinces, cities, towns, and other remarkable places throughout the world : illustrated with above three hundred copper-plates, engraved by Mr. Jefferys, geographer to His Majesty : the whole extracted from the best authors in all languages (1763)
Society of Arts (Great Britain). Society of Gentlemen, Jefferys, Thomas, -1771, Grignion, Charles, 1721-1810, Wale, Samuel, d. 1786, Owen, W. (William), d. 1793 · London : Printed for W. Owen, at Homer's Head, in Fleet-Street · leaf 331
fides the fquaie of half the coefficient prefixed to the unknown quailtiry itfdf, and the fide of the equationthat involves the unknown quantity wil]then he a complete fquare. 4. Extractthe fquare root from both fides of thequation, which you will find, on onfide, always to be the unknown… … + a, or — a \ and hence all quarlriequations admit of two folutions. Al E Q^lT [ 1**5 1 fincethe fquares of all quantities are po-litive, it is evident that the fquarerootofa negative quantity is imaginary, andcannot be- ailivned. However, the fol-lowing examples will illuttrate the rulesfor…
Art · Science
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
