Question

(4-у)квадрат-у*(у+1) при у=-1/9

Answer 1

Упростим сначала

16-8у+у²-у²-у = -9у+16

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

Answer 2

Ответ:

(4-y) квадрат-y(y+1)=16-8y+yквадрат-yквадрат-y=16-8y-y=16-9y

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

Объяснение:

Answer 3

To evaluate the expression (4y)² - y*(y + 1) when y = -1/9, follow these steps:

Step 1: Replace y with the given value (-1/9) in the expression. Step 2: Perform the calculations.

Let's calculate it step-by-step:

Step 1: Substitute y with -1/9 in the expression:

(4y)² - y*(y + 1)

= (4 * (-1/9))² - (-1/9) * (-1/9 + 1)

Step 2: Perform the calculations:

= (-4/9)² - (-1/9) * (-8/9)

= 16/81 - 8/81

Now, subtract the fractions:

= (16 - 8) / 81

= 8 / 81

So, the value of the expression (4y)² - y*(y + 1) when y = -1/9 is 8/81.