The solution set of inequalities x 6x 7 0?

If you solve this problem, he is in parentheses, x, minus one, and then in a parenthesis is x+seven, and then it is greater than zero, you can solve the brackets, this is the fifth grade of primary school, it is relatively simple.

x²＋6x－7＞0

The corresponding parabola is open upwards and intersects with the x-axis at points 1,-7

Match the square.

x square + 6x-7 is greater than zero.

x squared + 6x + 9) - 9-7 is greater than 0

x+3) squared greater than 16

Square on both sides. x+3 is greater than 4 to get x greater than 1;

x+3 is less than -4. x is less than -7

Answer: The solution of the equation is that x is greater than 1 and x is less than -7

Solution: x 6x 7 0

x ＋7)(x －1)＞0

x1 ＞－7，x2＞1；

x 1＜－7，x ＜1；

Answer: The solution set of inequalities x 6x 7 0.

The solution set is: 1 x 7.

This formula can be solved as x=1, or x=-7.

For this kind of math problem, you must ask your classmates or teachers for advice, whether they can explain it, so that you can master and understand his method of solving the problem.

This inequality can be broken down to the left as ( x +7) ( x -1) (greater than zero) and finally solved to be x greater than -7 and less than one.

The solution set of inequalitiesThese numbers, we can look up the network information to know what the solution set of inequalities means?

If you do this, you can do the next homework on it.

First, sort out the inequalities.

x*x>=4

First, solve the solution of x*x=4.

However, with the help of the number axis after guessing, it is not difficult to find that the area between the two solutions on the number axis, including these two solutions, is in line with the topic. That is, the solution set is this fully contained interval.

x²-4≥0

x 4x 2 or Talker x -2

The solution set of inequality x Danhui -4 0 is (- 2] u[2,+ contains Chi You.

According to the meaning of the title, it can be seen that the solution set is {x|-2>=x<=2｝

x is greater than or equal to 2 or x is less than or equal to -2

Since the equation x -x-6=0 has two roots: x = -2 or x = 3 and because the function y y=x -x-6 opens the image upwards, the solution set of the inequality is (- 2)u(3,+

Solution: x 2 10 Hu Missing Circle 7x Dress Up 0

x(xx7) 0

x 0 or x a 7

Therefore: the solution set of x 2 ten 7 x 0 is:

A 7 x pants collapse 0

x +7x 0,x(x+7) 0,x 0,x+7 0,no common solution;

x 0, x + 7 0, the unclosing coincides with the difference of -7 x imaginary roll 0

x^2-40≤3x

Solution: x 2-3x-40 0

x-8)(x+5)≤0

Therefore, the solution of the unequal skin pure formula x 2-40 3x unrepentant macro equation is: [5,8].

Summary. Hello, dear, I'll answer you right away, you wait.

The solution set of inequalities x 4.

Hello, dear, I'll answer you right away, you wait.

This is a quadratic inequality.

Then this sum is similar to a one-dimensional quadratic equation.

Let's square it.

to 4 open squares.

Because -2 is preceded by a minus sign, the direction of the unequal sign needs to be changed.

Then the solution is.

It's a union.

2x²-3x+2＞0

Let y=2x -3x+2

Let y=0 i.e. copy2x -3x+2=0

The equation =(-3) -4 2 2=9-16=-7 Therefore, the equation y=0 has no real solution.

That is, the function image of y=2x -3x+2 has no intersection with the x-axis.

And the quadratic coefficient of y is greater than 0, so y is a parabola with an opening upward.

So there is always y 0

That is, the solution set is: x (-

<>x -2x+3>0 to adjust the positive and negative signs of the highest secondary item.

x +2x-3<0,x+3)(x-1)<0,3 solution set is.

To simplify the left side of the equation, it is x(x-5), that is, x(x-5) 0, then if two real numbers (referring to the two numbers x and x-5) are multiplied by 0, one must be a positive number and one negative number. Then we have to discuss it separately.

In the first case, x is a positive number and x-5 is a negative number, i.e. x 0 and x-5 0, so getting 0 x 5 satisfies the question.

In the second case, x is a negative number and x-5 is a positive number, i.e. x 0 and x-5 0, i.e. x 0 and x 5, obviously such an x does not exist.

So, to sum up, 0 x 5.