Question

X²-4x-5(4-x)=0 помогите пожалуйста

Answer 1

Объяснение:

все на фото.

удачи !!!!!!!!!!!!!!!

Answer 2

Объяснение:

На фотографии все есть, прикрепил

Answer 3

Solving the Equation X²-4x-5(4-x)=0

To solve the equation X²-4x-5(4-x)=0, we can follow these steps:

1. Expand the Equation: - The given equation is X²-4x-5(4-x)=0. We can expand it to simplify the expression.

2. Simplify the Equation: - After expanding the equation, we can simplify it to a standard form to solve for the values of X.

3. Solve for X: - Once the equation is simplified, we can solve for the values of X using the quadratic formula or factoring.

Let's proceed with the steps to solve the given equation.

Solution Steps

1. Expand the Equation: - The given equation is X²-4x-5(4-x)=0. Expanding it, we get: X²-4x-20+5x=0 X²+x-20=0

2. Simplify the Equation: - After expanding, the equation becomes X²+x-20=0.

3. Solve for X: - We can solve for the values of X by factoring or using the quadratic formula.

- Factoring: - Factoring the quadratic equation X²+x-20=0, we get: (X+5)(X-4)=0 X+5=0 or X-4=0 X=-5 or X=4

- Quadratic Formula: - Using the quadratic formula, we have: X = (-b ± √(b²-4ac)) / (2a) where a=1, b=1, and c=-20

Substituting the values, we get: X = (-1 ± √(1²-4*1*(-20))) / (2*1) X = (-1 ± √(1+80)) / 2 X = (-1 ± √81) / 2 X = (-1 ± 9) / 2 X = (-1 + 9) / 2 or X = (-1 - 9) / 2 X = 8 / 2 or X = -10 / 2 X = 4 or X = -5

Conclusion

The solutions to the equation X²-4x-5(4-x)=0 are X = 4 and X = -5.

I hope this helps! If you have any further questions or need additional assistance, feel free to ask.