Final answer:
To determine ±√70, you calculate the square root of 70 and consider both the positive and negative outcomes, approximately ± 8.37.
Step-by-step explanation:
To find the value of ±√70, you calculate the square root of 70 and then consider both the positive and negative values of that result. The square root of 70 can be estimated by recognizing that it lies between the square root of 64 (which is 8) and the square root of 81 (which is 9). This means the square root of 70 will be a little less than 8.5 since 8.5² is 72.25, closer to 70 than both 64 and 81. Therefore, ±√70 is approximately ± 8.37, which are the two possible square roots: positive and negative.
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