Final answer:
The question contains a typographical error and cannot be solved as presented. To address exercises correctly, the student must use the rules of significant figures and scientific notation to maintain precision in their calculations.
Step-by-step explanation:
The question asked is to solve 2* = 3* + 1, but unfortunately, this seems to be a typographical error as the symbols provided do not represent a known mathematical problem. This appears to be an error in transcribing the powers or exponents in an exponential equation or it could be a mixing of different problem statements. Without the correct symbols or context, it is not possible to provide an accurate solution to this question.
For the exercises related to significant figures and scientific notation, the student should remember to apply the rules of significant figures while performing calculations to ensure the accuracy and precision of their answers are maintained. Examples given, such as adding and subtracting numbers, or multiplying, should be done while observing these rules to obtain correct answers in scientific notation and with the appropriate number of significant figures.