Final answer:
The equation x² + x - 12/(x-3) = x + 4 is incorrect because the left-hand side is undefined at x = 3 due to division by zero, while the right-hand side remains defined, leading to a discrepancy. The correct answer is option c.
Step-by-step explanation:
The equation in question is x² + x - 12/(x-3) = x + 4. Something is indeed wrong with this equation, as the left-hand side (LHS) of the equation includes the term 12/(x-3), which means the LHS is undefined when x = 3, because division by zero is undefined in mathematics.
However, the right-hand side (RHS) of the equation is defined when x = 3. Therefore, the correct answer to what is wrong with the equation is (c) The left-hand side is not defined for x = 3, but the right-hand side is. This means at x = 3, there is a discrepancy between both sides of the equation that needs to be considered when solving.