Final answer:
The student is asked to factor expressions, but they are already given in factored form as products of binomials. All the expressions A, B, C, and D are already factored completely and cannot be simplified further with integer coefficients.
Step-by-step explanation:
The student is asking to factor completely each of the given expressions. Factoring is the process of breaking down an expression into a product of simpler expressions, which can help in solving equations or simplifying expressions. We are given four expressions to factor, but they are already factored into binomial products. for expression A, (2x + 5)(2x - 3), and expression D, (2x+3)(2x - 5), they might appear to be unfactored quadratic expressions at first glance, but they are actually already in factored form. Each of these pairs of binomials cannot be factored further using integer coefficients.
Expressions B, (x+4)(x-15), and C, (x+5)(x-3), are similar to A and D; they are also already in their factored form and cannot be broken down into simpler expressions using integer coefficients. Therefore, all the given expressions A to D are already completely factored.