Question

21*(1/7)2 -10*1/7 помогите плиз

Answer 1

Я так понимаю, что 2 после первой дроби-это степень. Ответ (-1)

Answer 2

Sure, I'd be happy to help you with that math problem. Let's break it down step by step:

Step 1: Evaluate (1/7)^2 (1/7)^2 = (1/7) * (1/7) = 1/49

Step 2: Evaluate 21 * (1/49) 21 * (1/49) = 21/49 = 3/7

Step 3: Evaluate 10 * (1/7) 10 * (1/7) = 10/7

Now, we can subtract the results:

3/7 - 10/7 = (3 - 10)/7 = -7/7 = -1

So, the final answer is -1.