Question

Срочно! помогите решить!!минус икс в квадрате плюс четыре икс минус один равно ноль

Answer 1

Х1=4.25
х2=0.25
подучи формулу дискриминанта и х1 и х2

Answer 2

Quadratic Equation Solution

To solve the equation -x^2 + 4x - 1 = 0, we can use the quadratic formula. The quadratic formula is given by:

x = (-b ± √(b^2 - 4ac)) / (2a)

In this equation, a, b, and c are the coefficients of the quadratic equation. For our equation, the coefficients are:

a = -1 b = 4 c = -1

Plugging these values into the quadratic formula, we get:

x = (-4 ± √(4^2 - 4(-1)(-1))) / (2(-1))

Simplifying further:

x = (-4 ± √(16 - 4)) / (-2)

x = (-4 ± √20) / (-2)

x = (-4 ± 2√5) / (-2)

Simplifying the expression:

x = 2 ± √5

Therefore, the solutions to the equation -x^2 + 4x - 1 = 0 are:

x = 2 + √5 x = 2 - √5

Please note that the solutions are approximate values and can be expressed as decimals or in radical form, depending on the context.