01 Rays Primary Elements of Algebra - Vinaire's Blog · 2013. 9. 14. · dividing line of a...
25
01 Rays Primary Elements of Algebra - Vinaire's Blog · 2013. 9. 14. · dividing line of a fraction, affecta ita whole value. a2—b2 Thus, in — , the sign of a2, in the numerator,