Final answer:
The question appears to be a mathematical calculation that is incorrectly stated or incomplete; thus, it is not possible to provide a correct answer or a step-by-step solution without the proper expression or context.
Step-by-step explanation:
The calculation provided in the question seems to be incorrect or incomplete. The correct process to find the solution involves using mathematical operations and potentially solving quadratic equations depending on the context of the question. However, without a clear and accurate expression, it's not possible to provide a step-by-step solution or to calculate a numeric answer. If the expressions given in the reference information are part of the calculation, then we would need to accurately apply the quadratic formula or the correct mathematical operations to reach the solution. The reference information includes operations like dividing numbers and expressing them in scientific notation, adding and subtracting with significant figures, and solving quadratic equations.