4 multiplication and division of rational expressions 2 the least common multiple and clearing the denominators 5.1 hw sequences and summation notation x 5 4 equations that may be reduced to quadratics-x 5 3 the graphs of quadratic equations-x 5 2 solving 2nd degree equations-x 4 5 fractional exponents-x 4 4 more on algebra of radicals-x 4 3 algebra of radicals-x 4 1 radicals and pythagorean theorem-x 3 6 2 d linear inequalities-x