Question

(4-y)2 -y(y+1) при у=-1/9Ответ:​

Answer 1

Ответ:

Объяснение:

(4-y)² -y(y+1)=16-8y+y²-y²-y=-9y+16              при у=-1/9

-9*(-1/9)+16=1+16=17

Answer 2

To find the value of the expression (4-y)^2 - y(y+1) when y = -1/9, you can simply substitute y with -1/9 and perform the calculation:

(4 - (-1/9))^2 - (-1/9)((-1/9) + 1)

Now, let's simplify step by step:

(4 + 1/9)^2 - (-1/9)(-8/9)

(36/9 + 1/9)^2 - (8/81)

(37/9)^2 - (8/81)

(37/9) * (37/9) - (8/81)

1369/81 - 8/81

(1369 - 8) / 81

1361/81

So, the value of the expression when y = -1/9 is 1361/81.