Final answer:
The operation (2.0-1)² is performed by first subtracting 1 from 2.0, which gives 1.0, and then squaring the result, yielding an answer of 1, which corresponds to answer choice (a).
Step-by-step explanation:
The expression given is (2.0 - 1)².
First, perform the subtraction within the parentheses: 2.0 - 1 = 1.0.
Next, square the result obtained from the subtraction: 1.0² = 1.0 * 1.0 = 1.0.
Therefore, after evaluating the expression (2.0 - 1)², the answer is 1.0.
This operation involves subtracting 1 from 2.0, resulting in 1.0. Squaring 1.0 gives us 1.0 as the final outcome. Hence, the correct answer is a. 1.
In summary, by subtracting 1 from 2.0 and squaring the result, the outcome is 1.0. Thus, the solution to (2.0 - 1)² is 1.