suppose x=-2/3. How much is x^2-4x-1?

Question

-1/3

2 1/9 (Whole number 2 and at the side 1/9)

1/3

1 2/9

-3 2/9

 

The whole numbers and fractions confuse me

 

Answer 1

Just replace every instance of x in the expression with (-2/3).

 

(-2/3)² - 4(-2/3) - 1 = 4/9 + (8/3) - 1 = 4/9 + 24/9 - 9/9 = 28/9 - 9/9 = 19/9 = 2 1/9