Question

-(3-у)^2+у(у+2) при у=-1/8

Answer 1

Ответ:

Пошаговое объяснение:

=-9+6у-у^2 +у^2 +2у=8у-9

8*(-1/8)-9=-1-9=-10

Answer 2

To evaluate the expression -(3-у)^2 + у(у+2) at у = -1/8, follow these steps:

Step 1: Replace у with -1/8 in the expression. Step 2: Perform the calculations.

Let's go ahead and calculate it:

Expression: -(3-у)^2 + у(у+2)

Step 1: Replace у with -1/8

-(3-(-1/8))^2 + (-1/8)((-1/8) + 2)

Step 2: Perform the calculations

-(3+1/8)^2 + (-1/8)(15/8)

Now, let's calculate further:

-(3 + 1/8)^2 + (-1/8)(15/8)

-(3 + 1/8)^2 + (-1/8)(15/8)

-(3 + 1/8)^2 + (-1/8)(15/8)

-(3 + 1/8)^2 + (-1/8)(15/8)

-(3 + 1/8)^2 + (-1/8)(15/8)

-(25/8)^2 + (-15/64)

Now, let's calculate the square and the multiplication:

-(25/8)^2 + (-15/64)

-625/64 + (-15/64)

Now, combine the terms:

-625/64 - 15/64

Now, subtract the fractions:

-640/64

Finally, simplify the fraction:

-10

So, when у = -1/8, the value of the expression -(3-у)^2 + у(у+2) is -10.