Question

7*(1/7) в квадрате -8*1/7

Answer 1

$7\cdot (\frac{1}{7})^2- 8\cdot \frac{1}{7}=\frac{1}{7}\cdot (7\cdot \frac{1}{7}-8)=\frac{1}{7}\cdot (1-8)=\frac{1}{7}\cdot (-7)=-1$

Answer 2

To simplify the expression, we can start by performing the multiplication and division operations inside the parentheses first, and then squaring the result. So we have:

7*(1/7) = 1

Therefore:

7*(1/7)^2 - 8*(1/7) = 7*(1/49) - 8*(1/7)

Simplifying the fractions:

7*(1/49) = 1/7

8*(1/7) = 8/7

Substituting back into the expression:

1/7 - 8/7 = -7/7 = -1

So the final answer is -1.