Chapter 6 - Algebra: Equations and Inequalities - 6.5 Quadratic Equations - Concept and Vocabulary Check - Page 399: 1

$2x^{2}$, 3x, 10x, 15

Two binomials can be quickly multiplied by using the FOIL method, in which F represents the product of the first terms in each binomial, O represents the product of the outside terms, I represents the product of the two inside terms, and L represents the product of the last, (x+5)(2x+3) F = x.2x = $2x^{2}$ O = x.3 = 3x I = 5.2x = 10x L = 5.3 = 15