Question

X²-7x+1=0 розв'яжіть рівняння​

Answer 1

Ответ:

Объяснение:

В фото

Answer 2

Ответ:

D=b(в квадрате)-4ac=(-7)(в квадрате)-4*1*1=49-4=45. х1,2=(-в+-корень из D):2а. х1,2=(7+-корень из 45):2

Объяснение:

Answer 3

To solve the quadratic equation x² - 7x + 1 = 0, you can use the quadratic formula. The quadratic formula states that for an equation of the form ax² + bx + c = 0, the solutions for x can be found using the following formula:

x = (-b ± √(b² - 4ac)) / 2a

In your equation, a = 1, b = -7, and c = 1. Now, plug these values into the formula:

x = (7 ± √((-7)² - 4 * 1 * 1)) / 2 * 1

x = (7 ± √(49 - 4)) / 2

x = (7 ± √45) / 2

Now, let's calculate the two possible solutions for x:

1. x₁ = (7 + √45) / 2 ≈ 6.79
2. x₂ = (7 - √45) / 2 ≈ 0.21

So, the two solutions to the equation x² - 7x + 1 = 0 are approximately x₁ ≈ 6.79 and x₂ ≈ 0.21.