Algebra - Please see attached. Thanks,
Section 5.1 Factor out the GCF in each expression. 68. 15x y - 9xy + 6x y Factor each polynomial completely. 62. x y + 2x y + xy Section 5.5 Factor each polynomial completely. If a polynomial is a prime, say so. 72. 3x - 18x - 48 Section 4.3 Add or subtract the polynomials vertically.