Final answer:
Given the typo in the expression, it's not possible to determine the exact equivalent expression. It is likely that the correct algebraic expression should be quadratic, in which case the equivalent expression would be obtained through factoring.
Step-by-step explanation:
The question involves finding an equivalent expression to the given algebraic expression 2.12 – 14r + 24. This seems to be a typographical error as the expression does not appear to be complete or properly formatted. However, if we consider that the original expression could be quadratic in nature, we should look for an expression that can be expanded to match the given coefficients. None of the expressions (A, B, C, D) match a quadratic structure that results in the given expression 2.12 – 14r + 24. Therefore, based on the information provided, it is not possible to accurately determine which expression is equivalent without the complete and correct original expression. If the original expression is significantly different and possibly quadratic, the equivalent expression would typically be obtained by factoring that quadratic equation.