What is the value of 7² - 10?

To find the value of ( 7^2 - 10 ), start by calculating ( 7^2 ). This is the square of 7, which equals ( 49 ) because ( 7 \times 7 = 49 ).

Next, subtract 10 from 49. Performing the subtraction:

[

49 - 10 = 39

]

Thus, the final result of ( 7^2 - 10 ) is ( 39 ). This shows that option B is indeed the correct answer.

When dealing with similar problems, remember to first compute any exponentiation before performing subtraction or other operations, as the order of operations influences the outcome.