DIVISION. Nvert your Divifor, and then x as in Multiplica Nien, you the Product will be the Quotient de fired. bd ad+bc C :) ru+st (bdru+bdst the true Quotient. su adsubcsu IN INVOLUTIO N. Nvolve the Numerator into itself for a new Numerator, and the Denominator into itself for a new Denominator. N. B. If it has no Root prefix the Sign ✔ ✔3 Of SURD S. HEY are fuch Numbers as can't be exactly T expreffed in Figures, and are called irrational Numbers. Their Reductions were difficult, but now are almost useless; and decimal Arithmetic has rendered them more capable of exact Expreffion. Addition Addition and Subtraction. : F they be Homogenal, add or fubtract the rational Part, and to their Sum or Difference join the Surd. 2d. If the Surds be Heterogeneal, add or fubtract according to the Signs. MULTIPLICATION. F the Surds be Homogenal, take away the Sign and it is done; fo the xyxxy=xy and √xx+ aa× √xx+aa = xx+aa. If rational Quantities be joined to the Surds, then multiply the rational into the rational, and the Surd into the Surd, and join the Products together. Divifion of Surd Quantities. F the Quantities are pure Surds of the fame Kind, and can be divided off, without leaving a Remainder, divide them, and to their Quotient prefix their radical Sign. EXAMPLES. |