Question

(y-5)•(y+2)-(y-7)во второй степени>18​

Answer 1

Ответ: решение на фото.

Объяснение:

Answer 2

To solve the inequality, we need to simplify the expression on the left side first and then determine the solution. Let's proceed step by step:

1. Expand the expression: (y - 5) • (y + 2) - (y - 7) • (y - 7)

Using the formula (a - b) • (a + b) = a^2 - b^2, we can simplify the expression: (y^2 - 5^2) - (y^2 - 2 • y • 7 + 7^2) (y^2 - 25) - (y^2 - 14y + 49)

2. Combine like terms: y^2 - 25 - y^2 + 14y - 49

3. Simplify further:

• 25 + 14y - 49
• 74 + 14y

Now, we have the inequality:

-74 + 14y > 18

To solve for y, we need to isolate y on one side of the inequality. Let's do that:

Add 74 to both sides:

14y > 18 + 74 14y > 92

Finally, divide both sides by 14 to get the value of y:

y > 92 / 14 y > 6.57 (approximately)

So, the solution to the inequality is y > 6.57.