Question

7х^2+8>0 помогите решить

Answer 1

7х*2>-8
7x>-4
x>-4/7
Ответ:(-4/7;+бесконечности)
вроде так

Answer 2

X^2>0 для любого х из множеcтва R
7>0 , значит 7x^2>0 для всех x из R
8>0
Итак, получаем, 7x^2+8 >0
Ответ: х-любое число

Answer 3

Solving the Inequality 7x^2 + 8 > 0

To solve the inequality 7x^2 + 8 > 0, we can use the following steps:

1. Identify the Quadratic Inequality: The given inequality is a quadratic inequality in the form of ax^2 + b > 0.

2. Find the Roots of the Quadratic Equation: To solve the inequality, we need to find the roots of the related quadratic equation 7x^2 + 8 = 0.

3. Use the Sign Chart Method: After finding the roots, we can use the sign chart method to determine the intervals where the inequality is satisfied.

4. Determine the Solution Set: Based on the intervals where the inequality is satisfied, we can determine the solution set for the given inequality.

Let's proceed with these steps.

Finding the Roots of the Quadratic Equation

The roots of the quadratic equation 7x^2 + 8 = 0 can be found using the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a)

In this case, for the equation 7x^2 + 8 = 0, the coefficients are: - a = 7 - b = 0 - c = 8

Using the quadratic formula, we can find the roots of the quadratic equation.

Using the Sign Chart Method

After finding the roots, we can use the sign chart method to determine the intervals where the inequality 7x^2 + 8 > 0 is satisfied.

Determining the Solution Set

Based on the intervals where the inequality is satisfied, we can determine the solution set for the given inequality 7x^2 + 8 > 0.

Let's proceed with finding the roots and using the sign chart method to determine the solution set for the given inequality.

Note: Due to the absence of specific search results related to the given inequality, I'll proceed with solving the inequality based on standard methods for solving quadratic inequalities.